Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
cost patients » cost patient, cleft patients, care patients
among shui » among sri, tong shui
yang jui » yang judy, yang di, yang xi
yang jun » pang jun, yang jin, yang judy
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 yanling ((yang jui) or (yang jun)) cost patients risk among shui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((yang jui) OR (yang jun)) cost patients risk among shui ;*.