Perhaps you should try some spelling variations:
table studien » table studies, cable studies, table study
table student » male student, enable students, mobile student
die filosofia » di filosofia, de filosofia, e filosofia
a literatura » la literatura, a literature, y literatura
filosofia a » filosofia da, filosofia la, filosofia e

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