It's possible that:
* The name is misspelled. Double check the spelling and try searching again.
* The person is not a well-known actor. If they've only worked in smaller projects, they might not have a strong online presence.
* The person is using a stage name. Searching under a different name might be helpful.
If you can provide any additional information, such as the specific roles or projects they might have been in, I might be able to help you find them.