Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
qian wang » yiqian wang, qian rong, qian yan
yang zili » yang dali, yang li
than kong » tan kong, thang long, than one
kong sara » kong sar
gene we » gene one, gene set
gene w » gene _, gene m, gene 1

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: ((qian wang) OR (yuan chang)) yang zili ((gene we) OR (gene w)) than kong sara ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((qian wang) or (yuan chang)) yang zili ((gene we) OR (gene w)) than kong sara ;~".
• Adding a wildcard symbol may retrieve word variants: ((qian wang) or (yuan chang)) yang zili ((gene we) OR (gene w)) than kong sara ;*.