HI guys

I'm using the taxonomies filter module to allow display of a feed for multiple taxonomy terms.

-Vocab
--termx
--termy
--termz

I want to sometimes show all the nodes for termx+y or x+z and so on.

I can do this fine using the address mysite.com/taxonomy/term/tid1+tid2

This gives me 2 problems.
The firstly I want to use the actual terms and not the term IDs eg mysite.com/taxonomy/termx+termy

secondly I'm using the URL path alias module and it seems I cant get it to use multiple terms without manually creating every combination of aliases. Currently Each term is aliased at mysite.com/vocab/termname

I want to be able to use mysite.com/vocab/termx+termy

Manually creating all the possible comb inations of url alias isnt practical because the number required will be an exponential increase.

Any ideas how I can solve this problem.