Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
da literatura » la literatura, a literatura, na literatura
day studium » das studium, d studium, day studies
dem studium » das studium, im studium, zum studium
d filosofia » di filosofia, de filosofia, da filosofia

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