Perhaps you should try some spelling variations:
dong hoang » hong hong
chuan gene » human gene
gene wang » gene bank, wen wang
ka chuan » say chuan, hai chuan, ka chai
wang lin » wang li, wang qin, yang lin
lin zong » lin ling, lin meng
zong ghi » hong ghi, zong he

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 (wang yan)) ka chuan gene wang lin zong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong hoang) OR (wang yan)) ka chuan gene wang lin zong ghi ;*.