[Mailman-Users] how to use topics/ for more than one keyword

[LN Tora]

First, my apologies.  I would have gone to the listowners site were it still 
up, as I know this is a simple (and silly) question.

I have a virtual domain, and Mailman 2.1.5p1 came with the package.  I was 
able to set up a list easily enough, but I'm having trouble with 
understanding/using the topics feature.  From what I can make out, I 
actually have to use a regular expression to get it to match the categories 
I'm using.  While I'm familiar with PHP and Perl to a much lesser extent, I 
don't have a clue about Python.

Basically, I would like to know a basic expression for matching more than 
one keyword, using an "and" operator to ensure all the words are found.

All help greatly appreciated, thank you.
- LN