Perhaps you should try some spelling variations:
die filologica » di filologia, de filologia, e filologia
yeast double » year double, test doubles, cart double
filologica e » filologia e, filologici e, filosofica e
e literatura » de literatura, y literatura, e literatur
test double » test doubles
studie die » studie der

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: "((yeast double) OR (test double)) studie die filologica e literatura".
• Adding a wildcard symbol may retrieve word variants: ((yeast double) OR (test double)) studie die filologica e literatura*.