Perhaps you should try some spelling variations:
des filosofica » de filosofia, e filosofica, e filosofia
table studien » table studies, table student, cable studies
de literatura » de litterature, y literatura, a literatura
la literatura » la litterature, a literature
tests table » test tables, results table, test suitable
studien des » studien der, studie des, studien aus

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