Perhaps you should try some spelling variations:
la litterature » a literature
texts duales » neues duales, texts alex, texts cases
filosofia la » filosofia da, filosofia le, filosofica da
studium la » studium als, studium das, studium _
studium a » studium am, studium ad, studium _

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: "texts duales ((studium la) OR (studium a)) filosofia la litterature".
• Adding a wildcard symbol may retrieve word variants: texts duales ((studium la) OR (studium a)) filosofia la litterature*.