Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
zhong zhi » hong ghi, zhong tai
zhang zhi » wang zhi, zhang wei, zhang dai
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 yan hua gain ((yang lin) or (yang li)) ((zhong zhi) OR (zhang zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang yan hua gain ((yang lin) OR (yang li)) ((zhong zhi) OR (zhang zhi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan wang yan hua gain ((yang lin) or (yang li)) ((zhong zhi) OR (zhang zhi)) ;".
• Adding a wildcard symbol may retrieve word variants: yuan wang yan hua gain ((yang lin) or (yang li)) ((zhong zhi) OR (zhang zhi)) ;*.