Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
filosofica da » filosofia da, filosofia de, filosofia di
d filosofica » e filosofica, e filosofia, di filosofia
studium d » studium ad, studium _, studium 1
test des » test der, test test
test d » test de, test do, 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 d) OR (test des)) studium d filosofica da literatura.
• Adding a wildcard symbol may retrieve word variants: ((test d) or (test des)) studium d filosofica da literatura*.