Perhaps you should try some spelling variations:
da litterature » la litterature, de litterature, a litterature
filosofica da » filosofia da, filosofia de, filosofia di
test die » test de, west die, test drive
studie e » studie 2, studie _, studie 3
studie 1 » studie 2, studie _
test do » test de, test d, test der

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: ((test die) OR (test do)) ((studie e) OR (studie 1)) filosofica da litterature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((test die) or (test do)) ((studie e) OR (studie 1)) filosofica da litterature".
• Adding a wildcard symbol may retrieve word variants: ((test die) or (test do)) ((studie e) OR (studie 1)) filosofica da litterature*.