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, hong hai, zhong zhi
wenn man » kann man, wenn das
yang jin » yang jie, yang jun, shang jin
ying jin » jing ji, yang jie
kann » ann

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 kann heat gain ((yan liang) or (((yang jin) or (ying jin)))) zhong tai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wenn man kann heat gain ((yan liang) OR (((yang jin) OR (ying jin)))) zhong tai ;.
• Adding a wildcard symbol may retrieve word variants: wenn man kann heat gain ((yan liang) or (((yang jin) or (ying jin)))) zhong tai ;*.