* The title is incorrect. Double check the spelling and year.
* It's an obscure film. It may be a very low-budget or foreign film that isn't well-documented.
* It's a regional film. It could be a film made for a specific region or country that doesn't have widespread distribution.
If you can provide more details about the film, such as the director, genre, or a synopsis, it might be easier to identify it and find the cast information.