Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
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 siu, wong shiu
yan yan » yan yuan, nan yan, wang yan
won sau » wong sam, wong siu

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((((yan yan) OR (yao yang))) OR (yang yang)) hua gene yang jin ((won sau) OR (wong sau)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((((yan yan) OR (yao yang))) OR (yang yang)) hua gene yang jin ((won sau) OR (wong sau)) ;".
• Adding a wildcard symbol may retrieve word variants: lang ((((yan yan) OR (yao yang))) OR (yang yang)) hua gene yang jin ((won sau) OR (wong sau)) ;*.