Search does not including all available information

[drunknmonkey]

I was just searching for the song "Alibi" by "Ella Henderson" which is a remix of "Gangstas Paradise" by Coolio.
I did not remember the name of the song, but I knew that I wrote the remix information in the comment tag.
So I searched for "Gangstas Paradise" but search did not bring up the desired song.
Only the extended search with explicit search in comments found the desired song.

Why does the general search field not include all available metadata?
And why does the search field tooltip not give information on the fields that are included in search?

[Lowlander]

Is Comments enabled to be searched?

[drunknmonkey]

Sorry for the late reply. I missed the notification.

Thanks for the hint to the search settings. Comments were not enabled.
Now it works!