Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
dang hadi » dang hai
yan guan » gan guan, yan yuan, yang guang
yang lin » yang jin, wang lin, yang li
ying jin » yang jin, jing ji, yang jie
yang yi » yang di, yang xi, yang jui
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan guan heat gain ((yang lin) or (((ying jin) or (yang yi)))) dang hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan guan heat gain ((yang lin) OR (((ying jin) OR (yang yi)))) dang hadi ;.
• Adding a wildcard symbol may retrieve word variants: wang yan guan heat gain ((yang lin) or (((ying jin) or (yang yi)))) dang hadi ;*.