Perhaps you should try some spelling variations:
del literatura » pela literatura, da literatura, e literatura
de literatura » de litterature, la literatura, y literatura
texten das » texten des, texten der, texten aus
studium la » studium a, studium als, studium das

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: "texten das studium la filosofia ((del literatura) OR (de literatura))*".