Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
de filosofia » e filosofia, di filosofia, la filosofia
studium de » studium der, studium des, studium die
text das » text des, text data, text der

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: text das studium de filosofia del literatura*.