Perhaps you should try some spelling variations:
lengua literatura » lingual literature, language literature, na literatura
pena literatura » pela literatura, na literatura, a literatura
duale studien » duale studium, scale studien, duales studium
la literatura » la litterature, a literature
quito duale » quito 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: quito duale studien 3 filosofia ((pena literatura) OR (((lengua literatura) OR (la literatura)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "quito duale studien 3 filosofia ((pena literatura) or (((lengua literatura) OR (la literatura))))".
• Adding a wildcard symbol may retrieve word variants: quito duale studien 3 filosofia ((pena literatura) or (((lengua literatura) OR (la literatura))))*.