Are boolean queries available through the built-in GUI?

Hello,
I am using the hosted cloud search as a service and the built-in GUI.
I am trying aaa AND NOT bbb.
As soon as I hit AND, I have 0 results!!

Is advancedSyntax available through the built-in GUI, or demo GUI?

Does that mean that I have to build my own GUI to have boolean queries?

Thanks for your help
Henri

Ok, I found the appropriate setting (in the Ranking sub-menu!!).

Cheers,
Henri

Hi, Henri. Could you say where exactly you found the option? I turned on Advanced Search and I still have the problem you mentioned.