Why should you focus on multiple keywords?
 

Explaining (multiple) focus keywords
The Yoast SEO plugin helps you to optimize each and every post (or page) you write. Imagine yourself having a travel blog. For your travel blog, you’re writing a blog post about a road trip through California. The focus keyword is the word or phrase your audience will use in the search engines and for which you want your post to rank.
To choose your focus keyword wisely, you should do some research! In our example, the primary keyword would be [road trip California]. Sometimes it’s hard to choose one keyword because you want a post to rank for more than one particular focus keyword. Perhaps you would also like to rank for a synonym or for a slightly different keyword. That’s when the multiple focus keywords come in handy! Let’s look at 4 examples in which optimizing for multiple keywords is the best strategy.

very nice post.

Yoast is only good to raise your awareness that there is on page SEO.
Yoast does nothing to someone already knowing a little more.

You mean keyword stemming? Or keyword phrases??

Great post with nice information thanks for sharing

Because user not only search the particular term there are lot of query term related to that word so we need to focus on one or more multiple keywords use this technique only you get an more number of conversion for your business..

Yoast SEO plugin easy to use and help to optimize every post.