Perhaps you should try some spelling variations:
del literature » model literature, abel literature, fuel literature
die filosofia » di filosofia, de filosofia, e filosofia
studium die » studium der, studium des
des studium » des studiums, das studium, dem studium
test des » test der, test test

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: test des studium die filosofia del literature*.