Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
yan liang » yang liang, wang liang, you liang
han heat » a heat, can hear, lag heat
man han » man hat, man can, man kann
yang xi » yang yi, yang jui
woran » woman, moran, goran
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: woran man han heat gain ((yan liang) or (((yang xi) or (yang di)))) dang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: woran man han heat gain ((yan liang) OR (((yang xi) OR (yang di)))) dang hai ;.
• Adding a wildcard symbol may retrieve word variants: woran man han heat gain ((yan liang) or (((yang xi) or (yang di)))) dang hai ;*.