Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
yang yao » yang yang, yang yi, yang fan
kong yam » kong sar
hua gain » run gain, hua ban, via gain
yang lin » yang jin, wang lin, yang li
lin hong » tin hong, lin zong, min hong
hong ghi » zhong zhi, hong g, hong hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang ((((yang yao) or (wang yan))) or (kong yam)) ((hua gain) OR (heat gain)) yang lin hong ghi ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ((((yang yao) OR (wang yan))) OR (kong yam)) ((hua gain) OR (heat gain)) yang lin hong ghi ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((((yang yao) or (wang yan))) or (kong yam)) ((hua gain) OR (heat gain)) yang lin hong ghi ;".
• Adding a wildcard symbol may retrieve word variants: yang ((((yang yao) or (wang yan))) or (kong yam)) ((hua gain) OR (heat gain)) yang lin hong ghi ;*.