Perhaps you should try some spelling variations:
table studien » table studies, table student, cable studies
filosofia da » filosofia de, filosofia del, filosofia e
tests table » test tables, results table, test suitable
studien die » studie die, studien der
filosofia a » filosofia la, filosofia e, filosofia _

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 table studien die ((filosofia a) OR (filosofia da)) literatura".
• Adding a wildcard symbol may retrieve word variants: tests table studien die ((filosofia a) OR (filosofia da)) literatura*.