Perhaps you should try some spelling variations:
une litterature » de litterature, one literature, la litterature
en litterature » et litterature, la litterature, de litterature
da filosofia » la filosofia, di filosofia, a filosofia
day studium » das studium, d studium, day studies
dem studium » das studium, im studium, zum 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 ((day studium) OR (dem studium)) da filosofia ((en litterature) OR (une litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((day studium) or (dem studium)) da filosofia ((en litterature) OR (une litterature))".
• Adding a wildcard symbol may retrieve word variants: test ((day studium) or (dem studium)) da filosofia ((en litterature) OR (une litterature))*.