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 lin » wang lin, yang liang, huang lin
yang jin » yang jun, ying jin, shang jin
yang jie » yang di, yang jui, yang xi
yang li » yang di, 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 (yang lin))) or (((yang jin) or (yang jie)))) dang hadi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan tuan heat gain ((((yang li) OR (yang lin))) OR (((yang jin) OR (yang jie)))) dang hadi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan tuan heat gain ((((yang li) OR (yang lin))) or (((yang jin) or (yang jie)))) dang hadi ;".
• Adding a wildcard symbol may retrieve word variants: wang yan tuan heat gain ((((yang li) OR (yang lin))) or (((yang jin) or (yang jie)))) dang hadi ;*.