I need to have a 7 or more selector boxes each with spin or drop down entry containing only pre-set taxonomy terms.

I need to have a 7 selector boxes each containing pre-set taxonomy terms.

User makes a choice among selector boxes and a search is performed to return only those items specified among the selector box choices made by users.

There maybe 1 selector or several in no particular order chosen by the user.

I have very large database and need to narrow down choices by selection among many terms.

Also, some taxonomy terms are in tiers

i.e, Ford - yellow - 386 ci - 4 door - model no - year - convertible - etc.

After choice completed search needs to return nodes that agree with search term taxonomy only.