Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan chang, qian wang
yuan kang » yuan chang, chan kang, yuan kai
zhong zhi » zhang zhi, hong ghi, zhong tai
hua gain » heat gain, run gain, hua ban
yang lin » yang jin, wang lin, yang liang
yan hua » tan hua, ya hua, wang hua
yang li » yang di, yang xi, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) OR (yuan kang)) yan hua gain ((yang lin) or (yang li)) zhong zhi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (yuan kang)) yan hua gain ((yang lin) OR (yang li)) zhong zhi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) OR (yuan kang)) yan hua gain ((yang lin) or (yang li)) zhong zhi ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) OR (yuan kang)) yan hua gain ((yang lin) or (yang li)) zhong zhi ;*.