Related searches & Autocomplete - how to?

I try to understand how to use related searches and Google autocomplete on my website. I read information about use related searches in article where I have to use query for these phrases (I prepare articele about phrase X, and I shoulde use related search section phrases for X). I have a problem with this theory couse part of them aren't the same cluster to current phrase - It should to be use in other url. I checked it by SERPs and its other than for phrase X.
Can u explain me how to use it? Maybe I should use part of them? And the second thik, how about autocomplete?
@Edit
PAA is easier to use because it is referenced to the actual query.

You should use keywords everywhere chrome extension.

sarfrazk9 said:

You should use keywords everywhere chrome extension.

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Ok, I checked it and looks good but this extention doesnt tell me where to use scraped keywords. Maybe u can explain me?

These I use for sub headings, its not always a good idea to do the exact phrase from related searches as well just find the topic or motivation behind the phrase and write a sub heading/ section about that which makes sense. For example if your seeing a lot of related queries on price/ cost it might be a good idea to do a section on how costs or prices compare.

Jabbz18 said:

These I use for sub headings, its not always a good idea to do the exact phrase from related searches as well just find the topic or motivation behind the phrase and write a sub heading/ section about that which makes sense. For example if your seeing a lot of related queries on price/ cost it might be a good idea to do a section on how costs or prices compare.

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Ok but u do this by your intuition? I usually check that phrases own to the same cluster. I mean prases could rank on the same URL - manually or by python if 4 or more url is identical it could be use.

barber said:

Ok but u do this by your intuition? I usually check that phrases own to the same cluster. I mean prases could rank on the same URL - manually or by python if 4 or more url is identical it could be use.

Click to expand...

Yeah they need to be at the very least related to your main keyword target.

I think you should use your own keywords or also use chrome Extension

Try out the SEOMinion extension.