Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
studies does » studies dress, studies ds, studies der
e literatura » y literatura, e literatur, a literatura
tests table » test tables, results table, test suitable
studies die » studie die, studien die, studies dose

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tests table ((studies die) OR (studies does)) filosofia ((e literatura) OR (de literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tests table ((studies die) or (studies does)) filosofia ((e literatura) OR (de literatura))".
• Adding a wildcard symbol may retrieve word variants: tests table ((studies die) or (studies does)) filosofia ((e literatura) OR (de literatura))*.