Perhaps you should try some spelling variations:
patients risk » patients links, patients si, patients view
patient risk » patient task, patient cost, orient risk
among sri » among sex, among di, among ers
yang jun » yang jui, pang jun, yang jin
yang up » yang jui, tying up, 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 yanling ((yang up) or (yang jun)) cost ((patient risk) OR (patients risk)) among sri ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((yang up) OR (yang jun)) cost ((patient risk) OR (patients risk)) among sri ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yanling ((yang up) or (yang jun)) cost ((patient risk) OR (patients risk)) among sri ;*".