You know about the fake files problem these days? Search for artist or album, searching for artist and song title tends to bring up more fake results & spam.
Use the All Types search as well, try looking for artist - mp3 (or whatever format you prefer) or album title - mp3 etc.

Stay away from files with heaps of sources. Go for a file with 10 sources or less, or a modem source. If they're rare files, be prepared to wait for a while until you find a good source. Make sure to search at different times of day, when users in other time zones are online

Don't know if you've read this sticky but it's got some good info & tips
How to find music