Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
wang wing » wang jing, wang liang, wang yang
wang ning » wang jing, wang liang, wang yang
gene sang » lee sang, gene bank
sang tin » sang minh, lang tim, sang tae
tin hong » tan hong, kia hong, thi hong
tan zhi » yan zhi, wang zhi, tan chia
hong g » hong ng, hong w, hong 7

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 wing) OR (wang ning)) ((tan zhi) OR (tuan china)) gene sang tin hong g ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang wing) OR (wang ning)) ((tan zhi) or (tuan china)) gene sang tin hong g ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang wing) OR (wang ning)) ((tan zhi) or (tuan china)) gene sang tin hong g ;*.