Perhaps you should try some spelling variations:
gain yang » dan yang, daun yang, tan yang
tran van » trang van, trang vang, frans van
van dong » van long, van den, van doom
dong hua » wang hua, tong hui, dong hoi
hua gain » heat gain, run gain, hua ban
yang lin » yang jin, wang lin, yang li
hong hai » shang hai, zhong tai, hong tan
hong ghi » zhong zhi, hong g

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

• Performing a fuzzy search may retrieve terms with similar spellings: tran van dong hua gain yang lin ((((hong hai) or (hong ghi))) or (dang hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tran van dong hua gain yang lin ((((hong hai) OR (hong ghi))) OR (dang hai)) ;.
• Adding a wildcard symbol may retrieve word variants: tran van dong hua gain yang lin ((((hong hai) or (hong ghi))) or (dang hai)) ;*.