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
yang jin » yang jie, yang jun, ying jin
yang yi » yang jui
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 tuan heat gain ((yang di) or (((yang jin) or (((yang yi) or (yang xi)))))) dang hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan tuan heat gain ((yang di) OR (((yang jin) OR (((yang yi) OR (yang xi)))))) dang hadi ;.
• Adding a wildcard symbol may retrieve word variants: wang yan tuan heat gain ((yang di) or (((yang jin) or (((yang yi) or (yang xi)))))) dang hadi ;*.