Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
gain wang » yan wang
kong yam » kong sar
wang tin » wang lin, wang qin, wang jing
tin hong » tan hong, kia hong, thi hong
kang ya » kang ca, wang yan, kang tae
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 wang tin hong g ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang ((kang ya) OR (kong yam)) heat gain wang tin hong g ;.
• Adding a wildcard symbol may retrieve word variants: yang ((kang ya) or (kong yam)) heat gain wang tin hong g ;*.