Perhaps you should try some spelling variations:
yan tuan » yan guan, yan yuan, anh tuan
tuan hua » tan hua, tuan vu, yuan hui
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
wong siu » wong shiu, kong siu, wong sau
yang xi » yang jui
yang yi » yang jui
wang » wing, wan, lang

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 yan tuan hua gene ((((((yang xi) OR (yang yi))) OR (yang di))) OR (yang jin)) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan tuan hua gene ((((((yang xi) or (yang yi))) or (yang di))) or (yang jin)) wong siu ;*.