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
min zhong » min hong, tin hong, amin hong
zhong zhi » zhang zhi, hong ghi, zhong tai
hua gene » human gene, a gene, hua ren
yang min » yang mind, yang jin, tang min
yi hua » li hua, ya hua, yi hui

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)) yi hua gene yang min zhong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong yang) OR (yang yang)) yi hua gene yang min zhong zhi ;*.