I'm looking for a search engine that can help me find a movie title.  I
tried IMDB but the search criteria has to be by the initials of the
actors.  Ideally, it should allow me to include multiple sets of actor
initials (not names). (e.g. H.F. and K.A. would include Raiders of the
Lost Ark in the result set.)

IMDB includes a regular expression search for titles (which doesn't
seem to work very well), but doesn't seem to have what I'm looking
for.

Thanks in advance for your help.

Try Netflix and see what happens in a search.  You never know.

Not to be discouraging, but I think its unlikely you'll find what you
are looking for.

Think about how a search engine operates.  It's goal is to return
'relevant' results to the searcher.

So typing in J.S. could mean:

John Smith
Joan Smith
Jack Smith
Jackie Smith
Jeff Smith

Here, I am not varying the last name, but can you imagine how many
combination of names can be created with the initials J.S.?  There is
no possible way for for any computer algorithm to figure out from J.S.
that you actually meant or are looking for "Joan Smith."

Unfortunately, programs can only do what you say, not what you mean --
at least for now. =)

To clarify, I'm looking for a search engine within a site that
specializes in movies, similar to imdb.  Where I could search for all
movies that costarred actors or actresses with specific initials.