Perhaps you should try some spelling variations:
la litterature » a literature
test suitable » best suitable, most suitable, notes suitable
de filosofica » de filosofia, e filosofica, e filosofia
la literatura » a literature
tests table » test tables, results table, lists tables
studies de » studies der, studies die, studies doe

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) OR (test suitable)) studies de filosofica ((la literatura) OR (la litterature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests table) OR (test suitable)) studies de filosofica ((la literatura) or (la litterature))".
• Adding a wildcard symbol may retrieve word variants: ((tests table) OR (test suitable)) studies de filosofica ((la literatura) or (la litterature))*.