Perhaps you should try some spelling variations:
y literatura » la literatura
tests large » test large, tests target, jets large
studien die » studie die
studien der » studie der, studenten der
filologia y » filologia e, filologica e, filosofia y

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 large ((studien die) OR (studien der)) filologia y literatura".
• Adding a wildcard symbol may retrieve word variants: tests large ((studien die) OR (studien der)) filologia y literatura*.