Perhaps you should try some spelling variations:
john song » john wong, john bonn, john ngosong
wang wang » wang yang, wang liang, wang yan
minh gong » minh cong, min hong, ming kong
yuan lin » yuan li, duan lian, huang lin
gong hui » tong hui, tong shui, wang hui
yan lin » yang lin, yan liang, wang lin
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 wang ((yan lin) OR (yuan lin)) ((li song) OR (john song)) minh gong hui ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang ((yan lin) OR (yuan lin)) ((li song) or (john song)) minh gong hui ;~".
• Adding a wildcard symbol may retrieve word variants: wang wang ((yan lin) OR (yuan lin)) ((li song) or (john song)) minh gong hui ;*.