Perhaps you should try some spelling variations:
del literature » model literature, abel literature, fuel literature
di filosofia » la filosofia, e filosofia
studium di » studium die, studium i, studium ii
i studium » im studium, ii studium, iv studium
test i » test ii, test 1

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

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