Perhaps you should try some spelling variations:
e filosofica » e filosofia, e filosofiche, a filosofia
a literatura » la literatura, y literatura, a literatur
westen das » testen das, west das, westen der
studium e » studium _, studium 1, studium 3
west » test
westen » testen

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: ((west _) OR (westen das)) studium e filosofica ((a literatura) OR (a literature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((west _) or (westen das)) studium e filosofica ((a literatura) OR (a literature))".
• Adding a wildcard symbol may retrieve word variants: ((west _) or (westen das)) studium e filosofica ((a literatura) OR (a literature))*.