Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
gain yang » dan yang, daun yang, tan yang
shang kai » shang hai
fan ying » fan xing, tan ying, jin ying
ran ying » tan ying, jin ying, gao ying
yang jin » yang jie, yang jun, ying jin
hong » long

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

• If you are trying to use Boolean operators, they must be ALL CAPS: yang ((fan ying) OR (ran ying)) heat gain yang jin ((shang kai) OR (hong w)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((fan ying) OR (ran ying)) heat gain yang jin ((shang kai) or (hong w)) ;~".
• Adding a wildcard symbol may retrieve word variants: yang ((fan ying) OR (ran ying)) heat gain yang jin ((shang kai) or (hong w)) ;*.