Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
filosofia da » filosofia de, filosofia del, filosofia e
studium da » studium das, studium a, studium der
studium d » studium ad, studium _, studium 1
test de » test der, test des, est de

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: "test de ((studium da) OR (studium d)) filosofia da literatura".
• Adding a wildcard symbol may retrieve word variants: test de ((studium da) OR (studium d)) filosofia da literatura*.