Perhaps you should try some spelling variations:
die filosofia » di filosofia, de filosofia, e filosofia
di literatura » de literatura, da literatura, di letteratura
ii literatura » ii literatur, ii literature, iii literature
case studie » case studies, cases studies, cases studied
tests case » test case, tests based, test cases
studie die » studie der

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 case studie die filosofia ((di literatura) OR (ii literatura))*".