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 zhi » zhang zhi, zhong tai
yang tin » yang jin, yang lin, yang jing
hong ghi » hong g, hong hai
a gene » a genre, a gender, a gentle
xi a » xi ai, i a, ii a

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