Perhaps you should try some spelling variations:
gene yang » gene bank
wang dan » wang yan, wang ban, wang yidan
asia hua » asia human, asia a, asia how
hua gene » human gene, a gene, hua ren
yang jin » yang jie, yang jun, ying jin
wong siu » wong shiu, kong siu, wong sau
hong hai » shang hai, zhong tai, dang hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang dan asia hua gene yang jin ((((wong siu) or (kong sar))) or (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang dan asia hua gene yang jin ((((wong siu) OR (kong sar))) OR (hong hai)) ;*.