What's wrong with "casino chip*" ? or "Casino token*" Etc. I think your search with names makes it very specific, complicated, and likely to miss many items. The "*" gets you chip or chips. (or chip anything for that matter)

Since I like Elko I often use "Elko Casino" for my search. Sure I get tokens, postcards, ashtrays, and pictures, but it's better than using all the casino names.

Hope that helps?