Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
studium da » studium das, studium d, studium der
studium a » studium am, studium ad, studium _
est als » test als, pest als, west als

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: "est als ((studium da) OR (studium a)) filosofia la literatura".
• Adding a wildcard symbol may retrieve word variants: est als ((studium da) OR (studium a)) filosofia la literatura*.