First, sorry I cannot show any code because I do not know where the actual problem is.
I did not modify anything nor install any plugins, but when I search for a post globally with the default search, I am getting a few correct results back, but the problem is it shows a lot of posts results what are actually not related to the search query.
So if I search for example 'Hello World'.
I get the Hello World post back and under it I get results like:
Football, Basketball related posts and neither the content or title contains Hello World for example.
I searched a lot did not find any solution, did anyone else have this problem? Is there a fix for it?