Perhaps you should try some spelling variations:
del literatura » pela literatura, da literatura, e literatura
duale studien » duale studium, scale studien, duales studium
de literatura » de litterature, la literatura, y literatura
texto duale » texto durante
3 filosofia » e filosofia, a filosofia, y filosofia
studien 3 » studien _, studien 4, studien 5

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 duale studien 3 filosofia ((del literatura) OR (de literatura))".
• Adding a wildcard symbol may retrieve word variants: texto duale studien 3 filosofia ((del literatura) OR (de literatura))*.