Perhaps you should try some spelling variations:
wing yanling » wang yanling, wang yangming
patient risk » patients risk, patient task, patient cost
patient care » inpatient care, outpatient care
tying up » taking up, tying _
yang jui » yang judy, yang di, yang xi
gong hui » tong hui, tong shui, wang hui

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: wing yanling ((tying up) OR (yang jui)) cost ((patient risk) OR (patient care)) gong hui ;~.
• Adding a wildcard symbol may retrieve word variants: wing yanling ((tying up) or (yang jui)) cost ((patient risk) or (patient care)) gong hui ;*.