Perhaps you should try some spelling variations:
among partners » paying partners, among farmers, among parents
among masters » among farmers, among actors, among letters
patients 1.8 » patients 10.1, patients 10.5, patients 10.6
do patients » de patients, des patients, dtc patients
yan yang » yang yang, dan yang, tan yang
yao yang » yang yang
fan do » can do, fan de
wang » wing, wan, lang

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: wang ((yan yang) OR (yao yang)) fan do patients 1.8 ((among masters) OR (among partners)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yan yang) OR (yao yang)) fan do patients 1.8 ((among masters) or (among partners)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yan yang) OR (yao yang)) fan do patients 1.8 ((among masters) or (among partners)) ;*.