Perhaps you should try some spelling variations:
doubles studium » duales studium
des filosofica » de filosofia, e filosofica, e filosofia
filosofica la » filosofica da, filosofia la, filosofia da
la literatura » la litterature, a literature
studium des » studium 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: "(test OR text) doubles studium des filosofica la literatura*".