Perhaps you should try some spelling variations:
table studien » table studies, table student, cable studies
die filosofia » di filosofia, de filosofia, e filosofia
a literatura » la literatura, y literatura, a literatur
tests table » test tables, results table, test suitable
studien die » studie die, studien 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: "tests table studien die filosofia ((a literatura) OR (a literature))".
• Adding a wildcard symbol may retrieve word variants: tests table studien die filosofia ((a literatura) OR (a literature))*.