Perhaps you should try some spelling variations:
fang yuan » wang yuhan, meng yuan, tang yun
yang yang » wang yang
gene yang » gene bank
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
wong sau » wong sam, wong shiu, wong lai
wong siu » wong shiu, kong siu, wong siew

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ((((wang yan) or (fang yuan))) or (yang yang)) hua gene yang jin ((wong sau) OR (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan ((((wang yan) OR (fang yuan))) OR (yang yang)) hua gene yang jin ((wong sau) OR (wong siu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((((wang yan) or (fang yuan))) or (yang yang)) hua gene yang jin ((wong sau) OR (wong siu)) ;*".