Perhaps you should try some spelling variations:
y literatura » la literatura
5 filosofia » e filosofia, y filosofia, _ filosofia
a filosofia » e filosofia, di filosofia
its das » its adas, its days, its day

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: its das studium ((((5 filosofia) OR (a filosofia))) OR (la filosofia)) y literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "its das studium ((((5 filosofia) OR (a filosofia))) or (la filosofia)) y literatura".
• Adding a wildcard symbol may retrieve word variants: its das studium ((((5 filosofia) OR (a filosofia))) or (la filosofia)) y literatura*.