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

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