Perhaps you should try some spelling variations:
der filosofica » de filosofia, e filosofica, e filosofia
de literatura » de litterature, y literatura, a literatura
la literatura » la litterature, a literature
tests duales » tests dalekjs, tests des, tests das
neues duales » neues sales, neues das, neues bundes

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tests duales) OR (neues duales)) studium der filosofica ((de literatura) OR (la literatura))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests duales) OR (neues duales)) studium der filosofica ((de literatura) or (la literatura))*".