Perhaps you should try some spelling variations:
duales studium » das studium
filosofia le » filosofia e, filosofia del, filosofia da
filosofia de » filosofia del
test duales » test doubles, test rules, test oracles
studium di » studium die, studium i, studium ii

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: "test duales studium di ((filosofia le) OR (filosofia de)) litterature*".