Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
dang hadi » dang hai
wang gan » wang yan, wang ban, wang dan
gan guan » yan guan, quan guan, fan guon
yang jin » yang jun, shang jin, wang jing
ying jin » jing ji
yang jie » yang di, yang jui, yang xi
yang li » yang lin, yang di, yang xi

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

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