Perhaps you should try some spelling variations:
joan smith » dan smith
yang lin » yang jin, yang li, yang liang
wang lin » wang li, wang qin, wang limin
lee joan » lee jean, lee john, lee alan
dong hoi » wong hoi, jong ho, dong di
yang xi » yang di, yang yi, yang jui
don hui » tong hui, dong hua, gong hui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yanling ((yang xi) or (((yang lin) or (wang lin)))) lee joan smith ((don hui) or (dong hoi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yanling ((yang xi) OR (((yang lin) OR (wang lin)))) lee joan smith ((don hui) OR (dong hoi)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yanling ((yang xi) or (((yang lin) or (wang lin)))) lee joan smith ((don hui) or (dong hoi)) ;*.