Perhaps you should try some spelling variations:
dong yang » dong hoang, dan yang, dong jung
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
gene yang » gene bank
yang tin » yang jin, yang lin, yang jing
tin hong » tan hong, kia hong, thi hong
hong ghi » zhong zhi, 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) OR (wang yang)))) xi a gene yang tin hong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (((yang yang) OR (wang yang)))) xi a gene yang tin hong ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong yang) or (((yang yang) OR (wang yang)))) xi a gene yang tin hong ghi ;".
• Adding a wildcard symbol may retrieve word variants: ((dong yang) or (((yang yang) OR (wang yang)))) xi a gene yang tin hong ghi ;*.