Perhaps you should try some spelling variations:
yuan kang » yuan wang, yuan chang, chan kang
kang yang » wang yang, yang yang, kang young
one agent » one parent, one event, und agent
hong than » hong tan, long thanh, hong hai
than hong » tan hong, thang long, than one
one gene » gene gene, one get
hong sau » wong sau, hong paul, kong sar
e gene » _ gene, a gene

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

• Performing a fuzzy search may retrieve terms with similar spellings: yuan kang yang ((((one gene) OR (one agent))) or (e gene)) hong than hong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan kang yang ((((one gene) OR (one agent))) OR (e gene)) hong than hong sau ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan kang yang ((((one gene) OR (one agent))) or (e gene)) hong than hong sau ;*".