Perhaps you should try some spelling variations:
yuan chang » yuan cheng, huang chang, han chang
yan zhang » bin zhang, han chang, hao zhang
heat gain » health gain, health gains, wheat grains
yan clan » das clan, yan guan, yan yuan
yang jin » yang jie, yang jun, ying jin
yang li » yang lin, yang di, yang xi
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((yan clan) or (((yan zhang) OR (yuan chang)))) heat gain ((yang li) or (yang jin)) dang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yan clan) OR (((yan zhang) OR (yuan chang)))) heat gain ((yang li) OR (yang jin)) dang hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yan clan) or (((yan zhang) OR (yuan chang)))) heat gain ((yang li) or (yang jin)) dang hai ;".
• Adding a wildcard symbol may retrieve word variants: lang ((yan clan) or (((yan zhang) OR (yuan chang)))) heat gain ((yang li) or (yang jin)) dang hai ;*.