Perhaps you should try some spelling variations:
older patients » elderly patients
patients risk » patient risk, patients links, patients si
wang liang » wang yang
risk tong » risk among, risk along
yang jui » yang di, yang xi, yang yi
tong hui » wang hui
yang up » tying up, yang jun, hang ups
judy » july

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 up) OR (yang jui))) OR (yang judy)) older patients risk tong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang liang ((((yang up) OR (yang jui))) or (yang judy)) older patients risk tong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wang liang ((((yang up) OR (yang jui))) or (yang judy)) older patients risk tong hui ;*.