Perhaps you should try some spelling variations:
patients links » patients clients, patients final, patients risk
care patients » cancer patients, failure patients
links among » linkages among
wang liang » wang yang
among ers » among peers, among users, among east
yang can » yang fan, yang yang, 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 liang ((yang can) or (yang dean)) care patients links among ers ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ((yang can) OR (yang dean)) care patients links among ers ;*.