(a) exact phrase between quotes:

"madonna - hung up"

Matches torrents containing "madonna - hung up" on title or internal
files.

(b) one word only:

madonna

Matches torrents containing madonna on title or internal files.

(c) Search on category only:

cat:music madonna

Matches torrents containing madonna on title or internal files in
category: music.
Available categories are: Anime | Books | Games | Movies | Music |
Other | Pictures | Software | TV Shows

(d) Search without:

madonna -confessions

Matches torrents containing madonna on title or internal files, but
not containing the word confessions.

(e) Combined:

cat:music "madonna - hung up" - confessions

You can combine any of the searches, like in cat: between quotes and
without...

You can also search trough advanced search here: http://www.bitenova.nl/asearch

Thanks,