Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, dan yang
yang yang » wang yang, wang yan
gene yang » gene bank
zhong tai » hong tan, hong hai, zhong zhi
yang min » yang mind, yang jin, tang min
a gene » a genre, a gender, a gentle
ka a » kai a, a a, k a
zhong » zlong
hong » long

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