What I have done that works really well is to go to Tools > Options > Filter > Keywords and then add these file extensions: .wma, .exe, .rar, .html, .com, .zip, .mov. Be sure to click Apply and O.K. There are a ton of fake and corrupt files with these extensions. I will only download mp3 files that are larger than 2000kb - 3000kb. Also make sure thay have a bitrate.
Sticky: How to find music (
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LOTR explains where the Fake Files are coming from and why.
Fake files showing up in search results
Also use the Keyword Filter to filter out select words that may be a concern. (same filter as the extensions above)
keywords-filter
Also would be a good idea to have these. Up to you
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Just by adding the above file extensions to the Keyword Filter will make a world of difference. If you find that you Don't want to filter some of them, then remove them from the filter. Hope this helps.