Perhaps you should try some spelling variations:
tests target » test target, tester target, test targets
y literatura » la literatura
studien des » studien der, studie des, studien aus
filologia y » filologia e, filologica e, filosofia y
studien de » studien der, studien die, studien dd

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: "tests target ((studien de) OR (studien des)) filologia y literatura".
• Adding a wildcard symbol may retrieve word variants: tests target ((studien de) OR (studien des)) filologia y literatura*.