Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, de litteratura
e literatura » de literatura, y literatura, e literatur
der studium » oder studium, dem studium, des studium
texten der » texte der, text der
studium la » studium a, studium als, studium das

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: texten der studium la filosofia ((le literatura) OR (e literatura))*.