Perhaps you should try some spelling variations:
dualen studium » duale studium
duales studium » das studium
de litterature » la litterature, et litterature
1 filosofia » a filosofia, y filosofia, _ filosofia
e filosofia » la filosofia
texto » textos, text, texts

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: "texto ((dualen studium) OR (duales studium)) ((1 filosofia) OR (e filosofia)) de litterature".
• Adding a wildcard symbol may retrieve word variants: texto ((dualen studium) OR (duales studium)) ((1 filosofia) OR (e filosofia)) de litterature*.