Perhaps you should try some spelling variations:
yuan kang » yuan wang, yuan chang, chan kang
kang yang » wang yang, yang yang, kang young
hong than » hong tan, long thanh, hong hai
one gene » gene gene, one agent, one get
hong sau » wong sau, hong paul, hong seo
e gene » _ gene, a gene
sar » sara, star, saur

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: yuan kang yang ((one gene) OR (e gene)) hong than ((hong sau) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan kang yang ((one gene) or (e gene)) hong than ((hong sau) OR (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: yuan kang yang ((one gene) or (e gene)) hong than ((hong sau) OR (kong sar)) ;*.