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