Perhaps you should try some spelling variations:
cross patient » class patient, proms patient, access patient
patient links » patients links, patient eine, patient life
wang liang » wang yang
links tong » links among
yang jun » yang jui, yang jin, yang judy
pang jun » yang jui
tong hui » wang hui
yang up » yang jui, tying up, hang ups

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 up) or (yang jun))) or (pang jun)) cross patient links tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang liang ((((yang up) OR (yang jun))) OR (pang jun)) cross patient links tong hui ;.
• Adding a wildcard symbol may retrieve word variants: wang liang ((((yang up) or (yang jun))) or (pang jun)) cross patient links tong hui ;*.