Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
gene bank » gene banks, one bank, genomen bank
zhong tai » hong tan, hong hai, zhong zhi
hong than » hong tan, long thanh, hong hai
bank min » bank aid, bank btn, bank can
a gene » a genre, a gender, a gentle
a a » a la

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong yang) OR (yang yang)) a a gene bank min ((zhong tai) or (hong than)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) a a gene bank min ((zhong tai) OR (hong than)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) OR (yang yang)) a a gene bank min ((zhong tai) or (hong than)) ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) OR (yang yang)) a a gene bank min ((zhong tai) or (hong than)) ;*.