Perhaps you should try some spelling variations:
della literatura » della letteratura, pela literatura, nella letteratura
filosofia della » filosofia del, filosofia de
studium des » studium der
studium de » studium der, studium die, studium den
text das » text des, text data, text der

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "text das ((studium de) OR (studium des)) filosofia della literatura*".