Perhaps you should try some spelling variations:
polite literature » prose literature
life literature » prose literature
duale studium » duales studium, dualen studium, das studium
tests duale » tests due, tests scale, tests damage
studium la » studium a, studium als, studium das

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: "tests duale studium la filosofia ((life literature) OR (polite literature))".
• Adding a wildcard symbol may retrieve word variants: tests duale studium la filosofia ((life literature) OR (polite literature))*.