Perhaps you should try some spelling variations:
patients risk » patient risk, patients links, patients si
bond patients » burned patients, among patients, bond ratings
among east » among breast, among health
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
among ers » among peers, among users, among heis
yang jun » yang jui, pang jun, yang jin

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 jun) or (yang yang)) bond patients risk ((among east) OR (among ers)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang ((yang jun) OR (yang yang)) bond patients risk ((among east) OR (among ers)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang ((yang jun) or (yang yang)) bond patients risk ((among east) OR (among ers)) ;*".