Working here, by clicking on SEARCH and entering a title, LP number, artist’s last name, or any combination, thereof.      I’ve noticed, some, older, "audiophile" pressings are missing (ie: Sheffield, Crystal Clear, etc).       No doubt, the compiler didn’t get everything out there.
Tried Dust - "Hard Attack". Can see why it might not find...

As a former programmer, if it doesn't display "Not Found", it's a "BS" app...