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
wang yang » wang yan, wang liang, wang yanling
yang jun » pang jun, yang jin, yang judy
yang jui » yang judy, yang di, yang xi
yang up » tying up, hang ups, yang hui

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang ((yang up) or (((yang jun) OR (yang jui)))) cost patients risk among shui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ((yang up) OR (((yang jun) OR (yang jui)))) cost patients risk among shui ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang ((yang up) or (((yang jun) OR (yang jui)))) cost patients risk among shui ;*".