Suggestions

[Petie]

Use quotes. The search function on the site supports all search modifiers (plus, minus, quotes). I can look into sorting by relevance but really, since most of the sheets are relatively few words, relevance ranking won't be all too effective anyway.

Edit:
As a point of reference, take a look at the differences between the following:

Super Mario Bros vs. "Super Mario Bros" (unquoted vs. quoted)
Super Mario vs. Super -Mario vs. Super +Mario vs. +Super +Mario (Super or Mario vs. Super without Mario vs. Mario and, optionally, Super vs. Super and Mario)

I hope this adequately explains how search modifiers can affect your queries but if you have any questions, let me know and I'll put together a proper thread (something that I probably should do regardless, come to think of it).