Perhaps you should try some spelling variations:
tuan china » wuhan china, can china, taiwan china
gene yang » gene bank
tan chia » than china, can china, dan china
yan hua » tan hua, ya hua, wang hua
yang ji » yang jui, yang jie, yang jin
won sau » wong sau, wong sam, wong siu
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan ((yan hua) or (((tan chia) or (tuan china)))) gene yang ji won sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan ((yan hua) OR (((tan chia) OR (tuan china)))) gene yang ji won sau ;.
• Adding a wildcard symbol may retrieve word variants: wang yan ((yan hua) or (((tan chia) or (tuan china)))) gene yang ji won sau ;*.