Perhaps you should try some spelling variations:
cash patient » class patient, cash payment, care patient
patient risk » patients risk, patient task, patient cost
wang yang » wang yan, wang liang, wang yanling
yang jing » wang jing, yang jin, huang jing
hong ghi » zhong zhi, hong g, hong hai
jing ji » ying jin
ji cash » did cash

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 yang jing ji cash patient risk ((cong shu) OR (hong ghi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang jing ji cash patient risk ((cong shu) or (hong ghi)) ;*.