How does Expression search work in List Boxes?

[#1]

Gracias!

I attended a QlikView Designer training in Dubai and we saw you can do "expression" search in List Boxes.

When I try it, it seems to only search for fields inside one table or associated tables for a expression search. E.g. In the table below I can search for Decade AND Year as a combination but I cannot search for a Director AND Actor. Director and Title also works.