If You use the keyword filter, you don't see them. It is far worse with some other results

The ones that have the exact phrase but with (some number) before or after it. They really flod the search so we don't get a single legit result.
Like

*.*(89) mp3
(31)*.* mp3
(8)*.* mp3
etc.
maybe 50 different results like that with multiple sources. and the strange thing is that if you press one it doesn't start downloading at all. Makes me wonder why they show up.
Do they maybe install malware on our computer without our knowledge ?? Or is the only reason to cause trouble finding stuff??

How do we block those ?

The only thing that works is rephrasing to something that is part of the searchterm or to change the search term a little and hope that someone has misspelled the title. If we start adding (1) (2) (3) (4) etc. to our keywordfilter. How many legit results will we be blocking then ???