Perhaps you should try some spelling variations:
dong nan » dong yang, dong sin, dong bin
hua gain » heat gain, run gain, hua ban
yang jie » yang di, yang jui, yang yi
yang jin » yang jun, ying jin, wang jing
nan yan » nan ya, wang yan, qian yan
yan hua » tan hua, ya hua, wang hua
yang xi » yang di, yang yi, yang jui

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 yan hua gain ((((yang jie) or (yang xi))) or (((yang jin) OR (shang jin)))) cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong nan yan hua gain ((((yang jie) OR (yang xi))) OR (((yang jin) OR (shang jin)))) cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan yan hua gain ((((yang jie) or (yang xi))) or (((yang jin) OR (shang jin)))) cong shu ;*".