Perhaps you should try some spelling variations:
des patienten » der patienten, des prasidenten, und patienten
patienten 2.4 » patienten 21.4, patienten 2.3, patienten 2.7
among actors » among doctors, among acholi, among donors
daun yang » dan yang, tan yang, un yang
2.4 among » 2.4.2 among, 2.15 among, 1.5 among
yao yang » yang yang
plan des » plan de, bilan des, plan du

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yao yang) OR (((daun yang) OR (du yang)))) plan des patienten 2.4 among actors ;~.
• Adding a wildcard symbol may retrieve word variants: lang ((yao yang) or (((daun yang) or (du yang)))) plan des patienten 2.4 among actors ;*.