Struggling to create content but the website is still "empty"? I bet 90% of the reason lies in the initial detailed keyword research step. Don't throw money out the window anymore, let me show you the real treasure map that will help shape the entire success of an SEO project in 2026.
Why do 99% of SEO campaigns fail right from the keyword research step?
SEO campaigns often fail early because SEOs ignore understanding users' real search intentions, leading to choosing the wrong target right from the starting line. Why do keyword research? Because it is the guiding compass for your entire Online Marketing strategy.
Every day at Pham Hai, I meet many people complaining that they have written hundreds of articles but organic traffic is still flat. The problem isn't your writing skills, it's that you're addressing questions no one is asking.
What is keyword research? Or what is Keyword Research? Simply, this is the process of collecting, analyzing and selecting phrases that target customers enter into Google or Bing. In the context of AI Overviews (SGE) taking the throne in March 2026, misunderstanding keywords means you eliminate yourself from the game.
One inch wrong, one mile away: Consequences of choosing the wrong keywords
Choosing the wrong keywords causes the website to waste budget, attract the wrong target customers and drag down the overall ranking of the entire website. The most obvious consequence is that there is traffic but the conversion rate is 0.
You head into short-tail keywords with huge search volume but sky-high keyword difficulty. Result? You run out of budget before seeing your website move to page 2 of Google.
Even worse is attracting the wrong user base. For example, you sell "paid human resource management software", but SEO the keyword "free human resources management". People who read the content will leave immediately, increasing the bounce rate and sending a bad signal to Google.
Actual benefits when you master Keyword Research: Not just traffic!
The benefits of keyword research in SEO go beyond traffic numbers, it helps optimize conversion rates, understand customer behavior and shape a solid website structure.
When you master effective keyword research, you are directly serving your business's business goals and marketing goals. You will know exactly when users need information, when they are ready to withdraw their wallet.
Furthermore, a standard set of keywords helps you build a logical website structure. This is especially important if you are looking to wordpress SEO optimization so that Google bots can easily crawl data and index articles quickly.
The 5-step detailed keyword research process I have compiled over 10 years
The standard SEO keyword research process includes 5 steps: determining search intent, finding ideas, analyzing metrics, comparing competitors and grouping content. These are detailed keyword research steps to help you cover the entire customer funnel.
After a decade of working in the profession, I realized there are no shortcuts that bring sustainable results. Below is the step-by-step roadmap I apply to all projects in Pham Hai.
Step 1: Read your customers and niche market (Search Intent & Brainstorming)
The first step is brainstorming to identify the niche market and classify the user's search intent. Keyword research according to Search Intent is a vital factor for content to be prioritized for display by Google.
Keyword classification in SEO according to search intent is currently divided into 4 main groups. You must clearly understand:
| Search Intent type | User Characteristics & Behavior | Real-life example |
|---|---|---|
| Navigational Keywords | Search for a specific website or brand. | "Log in to Facebook", "Pham Hai SEO" |
| Informational Keywords | Search for information, knowledge, how to do things. | "What are LSI keywords", "how to make cakes" |
| Commercial Keywords | Research and compare before purchasing. | "iPhone 15 pro max review", "Ahrefs and SEMrush comparison" |
| Transactional Keywords | There is a clear intention to purchase or take action. | "Buy cheap iPhone 15", "register for SEO course" |
Put yourself in the customer's position, think about what Modifier Keyword (complementary keywords like "best", "cheap", "where") they would use to search for your service.
Step 2: Find keyword ideas from everywhere - Don't just rely on tools
The best way to find keyword ideas is to combine suggestion tools like AnswerThePublic, Keywordtool.io with listening to customers on forums and social networks. Don't limit yourself to dry numbers.
Machines cannot fully understand human emotions. I often surf Facebook groups, Reddit or read comments on YouTube to see what language customers are using.
Of course, to expand the list, you still need support tools. Names like Ubersuggest or LSI Graph are great for finding synonyms and contextually related keywords.
Step 3: Analyze and select smart keywords (Volume, Difficulty, CPC, LSI Keywords)
When choosing, you need to balance important metrics when researching keywords including: Search Volume, Keyword Difficulty (KD), and CPC. Prioritize keywords that are moderately difficult but bring high conversion value.
Not every high volume is good. Based on data updated in March 2026, the trend of zero-click searches is increasing strongly. Therefore, you need to look at the CPC (Cost Per Click) index. High CPC proves that the keyword is profitable, and many competitors compete to run PPC ads.
At the same time, don't forget to add LSI (Latent Semantic Indexing) keywords. These are phrases that are closely semantically related to the main keyword, helping search engines gain a deeper understanding of the context of your article without the need for crude keyword stuffing.
Step 4: How to analyze competitor keywords using Ahrefs and SEMrush
The most effective way to analyze competitor keywords is to use Ahrefs or SEMrush to see where they are getting traffic from. By looking at Domain Rating and URL Rating, you will know whether you have a chance to "get the upper hand" or not.
Keyword research using Ahrefs through the Site Explorer feature is my daily habit. Just enter your competitor's domain and you will see all the keyword rankings they own. If you see that your competitors have weak content but still get to the top, that is your "gold mine".
Similarly, keyword research using SEMrush gives insight into your competitors' strategies on both the SEO and advertising fronts. This analysis also helps you identify their link building strategy. For those who don't know, understanding What is a backlink and how to build quality backlinks is a key factor to compete fairly with the big guys on SERP.
Step 5: Group keywords and plan content (Topic Cluster)
Once you have the list, group them into Topic Clusters to plan long-term content. This helps create synergy, pushing the entire keyword phrase to the top at the same time.
Don't write each article for a single keyword. Group 1 main keyword and 5-10 secondary keywords/long-tail keywords with the same search intent into a single article (Pillar page).
For example, when planning an article how to write standard SEO articles on wordpress, I will combine keywords such as "how to optimize wordpress articles", "write SEO content on wordpress" into one content to thoroughly solve the reader's problem.
Indispensable tools: Keyword research tools I trust
For a successful campaign, you need a flexible combination of Google's free keyword research tool and paid, in-depth keyword research tools like Ahrefs or SEMrush.
Below is the toolkit that the Pham Hai team always has available in the browser.
Free and effective keyword research tool (Google Keyword Planner, Google Trends)
Google Keyword Planner and Google Trends are two free "official" tools that provide data directly from Google, extremely useful for understanding basic search trends and volumes.
Keyword research Google Keyword Planner is the first lesson for every SEOer. Instructions for using Google Keyword Planner are very simple: you just need to create a Google Ads account, enter a topic and the system will return thousands of ideas with search estimates.
Besides, Google Trends helps you catch "trends" extremely sensitively. It shows the interest level of a keyword in real time. Don't forget to combine with actual data from your website's Google Search Console to find keywords on page 2 and page 3 and optimize them.
In-depth paid keyword research tools (Ahrefs, SEMrush)
Ahrefs and SEMrush are two "heavy weapons" that provide detailed data on difficulty, backlinks, and comprehensive competitor analysis. Instructions for using Ahrefs for keyword research usually start with the Keyword Explorer feature.
With Ahrefs Keyword Explorer, you can see the actual click-through rate, the number of searches with and without clicks. This is extremely important in 2026.
Meanwhile, the guide to using SEMrush for keyword research shines with the Keyword Magic Tool. It automatically classifies keywords into very smart semantic groups. If you are running a website and need to install support tools to track performance, equipping yourself with the best wordpress seo plugin combined with data from SEMrush will create a huge competitive advantage.
Effective keyword research strategy for each type of website
Each stage of website development requires a separate keyword research strategy. The new website needs to use guerilla attacks with long-term keywords, the old website needs to strengthen its strength by auditing and expanding content.
The same formula cannot be applied to all projects. You must know where you stand.
Keyword research for new website: Focus on long-tail keywords
Keyword research for a new website should target long-tail keywords with low competition to quickly get the first traffic.
What are long tail keywords? These are phrases with 4 words or more, low search volume but extremely high conversion rate because users are looking for a very specific need. For example, instead of SEO for "sneakers", choose "men's running sneakers size 42 black".
Currently, producing content for a series of long-tail keywords takes a lot of resources. Many SEO teams have started applying AI to write automatic content for blogs to speed up niche market coverage, but you still need to edit carefully to ensure the E-E-A-T factor.
Keyword research for existing websites: Optimize what is available
Keyword research for an existing website starts with Auditing the website, finding articles that are losing rankings and adding new keywords and short-tail keywords to boost strength.
If your website has a certain level of trust, this is when you can confidently target more difficult short keywords. Go to Google Search Console, filter out keywords with high Impressions but low Clicks. Those are "sweet fruits close to the ground". You just need to optimize the title, write more in-depth content to pull them to the Top 3.
Detailed keyword research is not a dry technical job with soulless numbers. Think of it as an honest conversation with your target customers. When you truly understand where they are hurting, what they need and what language they search in, you will not only gain high rankings on Google but also build a strong business. Start digging deeper into your keyword set today, don't let your competitors get any further behind.
If you find this process complicated and want a clear roadmap, leave a comment below, I will share the exclusive keyword research template file I am using!
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