Perhaps you should try some spelling variations:
among parents » among patients, among ports
among letters » among lecturers, among learners, among masters
lose manage » losses manage, class manage
manage risk » managing risk
wang liang » wang yang
yang fan » yang dean, yang yang, yang jin

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ((yang fan) OR (zhang fan)) lose manage risk ((among letters) OR (among parents)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ((yang fan) OR (zhang fan)) lose manage risk ((among letters) or (among parents)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang ((yang fan) OR (zhang fan)) lose manage risk ((among letters) or (among parents)) ;*.