[Pan-users] howto exclude a word in a search?

[Yann]

Hello,

I had a look in the FAQ, and did a search with google, but could not
find out how to do a search in Pan with a word excluded.
Exemple : find all posts with "Linux" in the subject, but without the
word network.
I tried :
Linux -network
Linux NOT network
none worked.

Is it possible? If yes, how? If not, that's a feature suggestion ;-)

Thanks for your help
Yann