Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
dong bin » dong sin, dong di, dann bin
dong nan » dong yang, dong sin, dong cao
dan cao » dan cao's, dong cao
ya heat » a heat, lag heat
a mine » _ mine, a mini, a mile
hong g » hong ng, hong w, hong 7
a min » a main, a mini, a mind

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((dong nan) or (dan cao))) or (dong bin)) ya heat gain ((a min) OR (a mine)) hong g ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((dong nan) OR (dan cao))) OR (dong bin)) ya heat gain ((a min) OR (a mine)) hong g ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((dong nan) or (dan cao))) or (dong bin)) ya heat gain ((a min) OR (a mine)) hong g ;*".