Perhaps you should try some spelling variations:
la litterature » a literature
der filosofia » de filosofia, e filosofia, di filosofia
la literatura » a literature
oral studien » coral studies, rural studies, viral studies
studien der » studie der, studien die, studenten der
test oral » test oracle, test orn, test oracles

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 oral studien der filosofia ((la literatura) OR (la litterature))*".