Doug, when I use the Casino name search for "frontier" (or "Frontier), I get the same no-results as you do. I'm guessing it's a glitch that can be fixed by Charles.

In the meantime, here's a workaround that worked for me -
Instead, use the ChipGuide Query Facility, and specify "frontier" in the "Keywords" box at lower left. (And if you want chips only, also specify "Chips-All" in the "Collectible Type" dropdown box. Then hit Query button and it should work.