Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
dong nan » dong sin, dong bin, dong cao
hua gain » heat gain, run gain, hua ban
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
long shu » cong shu, tong shui, long du
yan jiu » yang jie, pang jiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong nan) or (dong yang)) ya hua gain ((yan jiu) or (((yang jin) OR (ying jin)))) long shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong nan) OR (dong yang)) ya hua gain ((yan jiu) OR (((yang jin) OR (ying jin)))) long shu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong nan) or (dong yang)) ya hua gain ((yan jiu) or (((yang jin) OR (ying jin)))) long shu ;".
• Adding a wildcard symbol may retrieve word variants: ((dong nan) or (dong yang)) ya hua gain ((yan jiu) or (((yang jin) OR (ying jin)))) long shu ;*.