Perhaps you should try some spelling variations:
modules studium » modules studies, duales studium, nodules studies
na literatura » la literatura, a literature, y literatura
a literatura » la literatura, a literature, y literatura
et modules » et modeles, 2 modules, 3 modules
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: et modules studium la filosofia ((na literatura) OR (a literatura)).
• Adding a wildcard symbol may retrieve word variants: et modules studium la filosofia ((na literatura) or (a literatura))*.