Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
wang yang » wang yan, wang liang, wang yanling
wang ning » wang jing, wang liang, wang yong
gene sang » lee sang, gene bank
tin hong » tan hong, kia hong, thi hong
sang tin » sang minh, lang tim, sang tae
tan chia » than china, can china, dan china
tan zhi » yan zhi, wang zhi
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 yang) OR (wang ning)) ((((tan zhi) OR (tan chia))) OR (tuan china)) gene sang tin hong g ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (wang ning)) ((((tan zhi) OR (tan chia))) or (tuan china)) gene sang tin hong g ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (wang ning)) ((((tan zhi) OR (tan chia))) or (tuan china)) gene sang tin hong g ;*.