Perhaps you should try some spelling variations:
duales studium » das studium
de litterature » la litterature
et litterature » la litterature, art literature
duale studium » dualen studium, das studium
e filosofia » la filosofia

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: kontext ((duale studium) OR (duales studium)) e filosofia ((de litterature) OR (et litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "kontext ((duale studium) or (duales studium)) e filosofia ((de litterature) OR (et litterature))".
• Adding a wildcard symbol may retrieve word variants: kontext ((duale studium) or (duales studium)) e filosofia ((de litterature) OR (et litterature))*.