Perhaps you should try some spelling variations:
la litterature » a literature
la literatura » a literature
da filosofia » la filosofia, di filosofia, a filosofia
d studium » 2 studium, 4 studium, 3 studium
_ studium » im studium

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 studium) OR (_ studium)) da filosofia ((la literatura) OR (la litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((d studium) or (_ studium)) da filosofia ((la literatura) OR (la litterature))".
• Adding a wildcard symbol may retrieve word variants: test ((d studium) or (_ studium)) da filosofia ((la literatura) OR (la litterature))*.