Perhaps you should try some spelling variations:
double studie » double stage, double side, double saddle
yeast double » test double, year double, test doubles
filologica e » filologici e, filosofica e, philologica de
filologia e » fisiologia e, filologici e, filosofia e
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 studie die ((filologica e) OR (filologia e)) literatura".
• Adding a wildcard symbol may retrieve word variants: yeast double studie die ((filologica e) OR (filologia e)) literatura*.