Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
di filosofia » la filosofia, e filosofia
filosofia la » filosofia da, filosofia le, filosofica da
studium di » studium die, studium i, studium ii
test d » test de, test do, test des

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((test d) OR (test der)) studium di filosofia la literatura.
• Adding a wildcard symbol may retrieve word variants: ((test d) or (test der)) studium di filosofia la literatura*.