Perhaps you should try some spelling variations:
filosofia igel » filosofia del, filosofia de, filosofia e
igel literatur » teil literatur, l literatur, wahl literatur
test duales » test rules, test oracles, test dummies
y filosofia » e filosofia, a filosofia, la filosofia
studium y » studium _, studium 1, studium 3

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 duales) OR (test doubles)) studium y filosofia igel literatur".
• Adding a wildcard symbol may retrieve word variants: ((test duales) OR (test doubles)) studium y filosofia igel literatur*.