I feel like I'm the one always asking questions, so it's nice to have the opportunity to provide an answer for someone once in a rare while, so thank you! 🙂
Usually searching by "retro" helps. "Vintage" will probably go too far back and too obscure, but still have some really good, uh, movies. You can also use decades as a search parameter. For example "1990" will bring up a a good variety of obscure... movies.