It's possible that:
* The title is incorrect: Double check the title and year. Perhaps it was a documentary, television special, or event with a slightly different name.
* The film is obscure: It might be a very small or independent production that is difficult to find information on.
* You're thinking of something else: Could you be thinking of a different film or television show that features stars of the silver screen?
If you can provide more details about the film or show, I might be able to help you find the information you're looking for.