How do I perform an AND-search in BitComet (wTorrent Search)
with many words i.e. X and Y and Z
It doesn’t matter/you can’t.
The difficulty is that you’re searching multiple torrent sites, and they all treat queries differently. You’d need to search site-by-site, and figure out each one’s quirks. Some of them flat won’t do it, they’re going to do an OR no matter what your terms are. Some will respect quotations, others won’t. Some will accept boolean operators, most won’t.
And when you do finally figure out how to get just what you want from a site, it goes down permanently. There ought to be a standardized query language, but trying to get all the torrent site operators to agree on a standard would be a lot like trying to herd cats.