Perhaps you should try some spelling variations:
cleft patient » cleft patients, alerts patient, class patient
patient risk » patients risk, patient task, patient cost
risk tong » risk among, risk along
tong shui » tong hui, cong shu, gong hui
tying up » taking up, tying _
yang jin » yang jie, yang jun, ying jin
yang up » yang jui, yang jun, hang ups
wang » wing, wan, lang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((((yang up) or (tying up))) or (yang jin)) cleft patient risk tong shui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((((yang up) OR (tying up))) OR (yang jin)) cleft patient risk tong shui ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((((yang up) or (tying up))) or (yang jin)) cleft patient risk tong shui ;*.