I am looking for a thick book. ?? . A vidio or film is long or short. A book is thin or thick.
Well, it's not literally, physically long, but it refers to the fact that it has a lot of pages, there's a lot to read, and it will take a lot of time to read it. It sure works perfectly fine in Polish, and I don't expect it's weird in English...
Book are long and short in English. Totally normal. Actually, thick and thin would be weird unless you were describing physical appearance.