Can't find "Dalziel and Pascoe" in Search

I would like to set up a OnePass on my Roamio Plus for the detective show "Dalziel and Pascoe," but it doesn't show up at all in Search (!).



Why wouldn't Search know about this fairly well known (at one time) series?



Is there any other way that I can use to set up a OnePass for this series, which is currently not being broadcast on any of my channels?



Thanks.