Perhaps you should try some spelling variations:
cost patients » cost patient, cleft patients, care patients
patients risk » patient risk, patients links, patients si
risk gong » risk among, risk along, risk bond
yang jui » yang judy, yang di, yang xi
gong hui » tong hui, tong shui, wang hui
yang up » tying up, yang jun, hang ups
wang » 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 OR wan) OR wing) yanling ((yang up) OR (yang jui)) cost patients risk gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang OR wan) or wing) yanling ((yang up) or (yang jui)) cost patients risk gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang OR wan) or wing) yanling ((yang up) or (yang jui)) cost patients risk gong hui ;*.