Perhaps you should try some spelling variations:
select patients » cleft patients, selecting patient, benefit patients
patients risk » patient risk, patients links, patients si
taking up » making up, waking up, shaking up
risk pong » risk among, risk along, risk pooling
pong shui » tong shui, cong shu, tong hui
pang jun » yang jui
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 ((taking up) or (pang jun)) select patients risk pong shui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((taking up) OR (pang jun)) select patients risk pong shui ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((taking up) or (pang jun)) select patients risk pong shui ;*.