Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
zhong zhi » zhang zhi, hong ghi, zhong tai
yang fan » zhang fan, yang dean, yang jin
hua gene » human gene, a gene, hua ren
fan hua » tan hua, wang hua, tuan hua
bank di » bank die, bank do, bank adb
hong yu » wong yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang yang fan hua gene bank di ((zhong zhi) or (hong yu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang fan hua gene bank di ((zhong zhi) OR (hong yu)) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang fan hua gene bank di ((zhong zhi) or (hong yu)) ;*.