Perhaps you should try some spelling variations:
gain yang » dan yang, daun yang, tan yang
dean hua » dean a, tan hua, tuan hua
hua gain » heat gain, run gain, hua ban
tin hong » tan hong, kia hong
thi hong » tan hong
wan yan » wang yan, nan yan, wang yang
wai yan » wang yan, wei yang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan yan) OR (wai yan)) dean hua gain yang ((tin hong) or (thi hong)) ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan yan) OR (wai yan)) dean hua gain yang ((tin hong) OR (thi hong)) ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wan yan) OR (wai yan)) dean hua gain yang ((tin hong) or (thi hong)) ghi ;".
• Adding a wildcard symbol may retrieve word variants: ((wan yan) OR (wai yan)) dean hua gain yang ((tin hong) or (thi hong)) ghi ;*.