Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
gain wang » yan wang
kong yam » kong sar
wang tan » wang yan, wang ban, wang dan
kang ya » kang ca, wang yan, kang tae
hong ng » hong kong, hong jong, hong hong
hong g » hong w, hong 7, hong a

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