Perhaps you should try some spelling variations:
heat gain » health gain, health gains, wheat grains
yan liang » yang liang, wang liang, you liang
dang hari » dang hai
wenn das » wenn die
can heat » can beat, can hear, ocean heat
yang jin » yang jie, yang jun, ying jin
das can » das clan, ideas can, das cafe

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

• Performing a fuzzy search may retrieve terms with similar spellings: wenn das can heat gain ((yan liang) or (yang jin)) dang hari ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wenn das can heat gain ((yan liang) OR (yang jin)) dang hari ;*.