Perhaps you should try some spelling variations:
tuan heat » tuan hua, tube heat
heat gain » health gain, health gains, wheat grains
dang hadi » dang hai
yan tuan » yan guan, yan yuan, anh tuan
ying jin » yang jin, jing ji, yang jie
yang li » yang lin, yang xi, yang yi
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 tuan heat gain ((yang li) or (((ying jin) or (yang di)))) dang hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan tuan heat gain ((yang li) OR (((ying jin) OR (yang di)))) dang hadi ;.
• Adding a wildcard symbol may retrieve word variants: wang yan tuan heat gain ((yang li) or (((ying jin) or (yang di)))) dang hadi ;*.