Registry check more than one registry value

I'm doing a client check registry for two keys and all works great. I want to add a third registry check on the same Client Side Check Registry Check. Current: ("HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Stuff")AND "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MoreStuff" ISPR

I want to add another registry using another AND but I get an error: Syntax error in expression endpoint windows check agent. How can I add another registry in the same expression? I also tried OR.