Perhaps you should try some spelling variations:
cost patients » cost patient, cleft patients, care patients
patients risk » patient risk, patients links, patients si
wing yanling » wang yanling, wang yangming
taking up » making up, waking up, shaking up
risk wang » risk anp
tying up » tying _
yang jin » yang jie, yang jun, ying jin
wang hui » wang hua, wang zhi, wang wei

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: wing yanling ((((tying up) OR (taking up))) OR (yang jin)) cost patients risk wang hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yanling ((((tying up) OR (taking up))) or (yang jin)) cost patients risk wang hui ;~".
• Adding a wildcard symbol may retrieve word variants: wing yanling ((((tying up) OR (taking up))) or (yang jin)) cost patients risk wang hui ;*.