Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
wang yang » wang yan, wang liang, wang yanling
kong yam » kong sar
yang lin » yang jin, wang lin, yang liang
kang ya » kang ca, wang yan, kang tae
yang li » yang di, yang xi, yang yi
hong g » hong ng, hong w, hong 7

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

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