Perhaps you should try some spelling variations:
benefit patients » benefit payments, benefit payment, benefit clients
lead patients » les patients, cleft patients, des patients
among peers » among ers, among users, among letters
yan yang » yang yang, yao yang, dan yang
yang can » yang fan, yang dean, yang yang
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 can ((lead patients) or (benefit patients)) risk among peers ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yang can ((lead patients) OR (benefit patients)) risk among peers ;*.