Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
di filosofia » la filosofia, e filosofia
data studium » das studium, data studies, data studio
a filosofia » la filosofia, e filosofia
tests data » test data, lists data, testing data

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "tests data studium ((a filosofia) OR (di filosofia)) la literatura".
• Adding a wildcard symbol may retrieve word variants: tests data studium ((a filosofia) OR (di filosofia)) la literatura*.