Perhaps you should try some spelling variations:
cleft patients » select patients, les patients, benefit patients
patients hui » patients si, patients chap, patients chez
tong shui » tong hui, cong shu, gong hui
yang jui » yang judy, yang di, yang xi
hui tong » hui ping, hui yang, hui ying
yang up » tying up, yang jun, hang ups
wang » wing, wan, lang

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 yanling ((yang up) OR (yang jui)) cleft patients hui tong shui ;~.
• Adding a wildcard symbol may retrieve word variants: wang yanling ((yang up) or (yang jui)) cleft patients hui tong shui ;*.