Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
john wong » john song, john bonn
minh gong » minh cong, min hong, ming kong
yang jin » yang jie, yang jun, ying jin
gong hui » tong hui, tong shui, wang hui
li song » li cong, li rong, kim song

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 yang yang jin ((li song) OR (john wong)) minh gong hui ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang yang jin ((li song) or (john wong)) minh gong hui ;*.