search times on various p2p networks

[DrTiny]

Hi:

I am wondering if certain search queries take longer than others. I was told that with modern database searches, queries with more words took longer (regardless of how long each word is). Does anyone know if this is true on various p2p networks? In general, is there a way in which searches are more "complex" and may take longer to find?

I am particularly interested in these communities:
- FastTrack/Kazaa
- WPN/WinMX
- OpenNap

Sorry for such a technical question! thanks in advance for any assistance.