Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
yan liang » yang liang, wang liang, you liang
zhong tai » hong tan, zhong zhi
wenn man » kann man, wenn das
hat heat » hat hat, a heat, hat hab
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
hong hai » shang hai, dang hai, hong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wenn man hat heat gain ((yan liang) or (((yang jin) or (ying jin)))) ((zhong tai) OR (hong hai)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wenn man hat heat gain ((yan liang) OR (((yang jin) OR (ying jin)))) ((zhong tai) OR (hong hai)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wenn man hat heat gain ((yan liang) or (((yang jin) or (ying jin)))) ((zhong tai) OR (hong hai)) ;".
• Adding a wildcard symbol may retrieve word variants: wenn man hat heat gain ((yan liang) or (((yang jin) or (ying jin)))) ((zhong tai) OR (hong hai)) ;*.