Perhaps you should try some spelling variations:
dong hoang » hong hong
chuan gene » human gene
yang yang » wang yang, wang yan
gene yang » gene bank
ka chuan » say chuan, hai chuan, ka chai
zong ghi » hong ghi, zong he
yang li » yang lin, yang di, yang xi
li zong » lin zong, li cong, li rong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong hoang) or (yang yang)) ka chuan gene yang li zong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong hoang) OR (yang yang)) ka chuan gene yang li zong ghi ;*.