Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
hua gene » human gene, a gene, hua ren
gene yan » gene bank, ren yan, see yan
jiu wong » jiu cong, ji won, kie wong
wong sau » wong sam, wong siu, wong shiu
yan yan » yan yuan, nan yan, wang yan
yan jiu » yang jie, yang jin, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing ((yan yan) or (((yao yang) OR (yang yang)))) hua gene yan jiu wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing ((yan yan) OR (((yao yang) OR (yang yang)))) hua gene yan jiu wong sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing ((yan yan) or (((yao yang) OR (yang yang)))) hua gene yan jiu wong sau ;".
• Adding a wildcard symbol may retrieve word variants: wing ((yan yan) or (((yao yang) OR (yang yang)))) hua gene yan jiu wong sau ;*.