Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
peak heat » weak head
yang lin » yang jin, wang lin, yang liang
hong ghi » zhong zhi, hong g, hong hai
wan yan » wang yan, nan yan, wang yang
wai yan » wang yan, wei yang
yang li » yang di, yang xi, yang yi

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

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