It's possible that:
* The film doesn't exist: There might be a mistake in the information you have.
* The title is different: The film might be using a different title.
* The film is lost: Some films from that era are lost due to poor preservation techniques.
To find out more, you could try searching online databases like IMDb or the Internet Archive for film adaptations of "Adam Bede" from that period. You could also consult film history books or resources on early cinema.