Perhaps you should try some spelling variations:
da literatura » la literatura, de literatura, na literatura
a literatura » la literatura, a literature, y literatura
day studium » dem studium, d studium, day studies
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 (das studium)) d filosofia ((da literatura) OR (a literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "fast ((day studium) or (das studium)) d filosofia ((da literatura) OR (a literatura))".
• Adding a wildcard symbol may retrieve word variants: fast ((day studium) or (das studium)) d filosofia ((da literatura) OR (a literatura))*.