What's the best way to get the most out of your web search results?

as in keywords that open doors to ANY option containing EXACTLY what your input is…
search engines…
tips of any sort.

I use the stumbleupon toolbar… it’s very good… though random.
I’m looking for a way find EXACTLY what I’m looking for, without wasting time on so many other sites that pop up in the results (even though they may be incredibly intersting).
Example. I’ve been looking for this mp3 file for 4 years now: Bjork – Liquid Acid – A Tribute To Female Singers(Feat Moloko, Lamb, Bjork, Laika, Terra Nova)(Dj Live Mix).mp3
Whether to download or simply listen to online… FINALLY I managed to find the name here and the, but no actual playable file.
(It’s probably a bad example.. but that’s what I’m battling with as of now).