Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
del literatura » de literatura, da literatura, e literatura
duale studium » duales studium, dualen studium, das studium
die filosofia » di filosofia, de filosofia, e filosofia
texto duale » texto durante
studium die » studium der, studium des

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 studium die filosofia ((del literatura) OR (pela literatura))".
• Adding a wildcard symbol may retrieve word variants: texto duale studium die filosofia ((del literatura) OR (pela literatura))*.