Perhaps you should try some spelling variations:
ghana health » china health, data health
health gaps » health gap, health goals, health gains
man ghana » man han
yan liang » yang liang, wang liang, you liang
dang hari » dang hai
wenn man » kann man, wenn das
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang di, yang xi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wenn man ghana health gaps ((yan liang) OR (((yang jin) OR (yang jui)))) dang hari ;~.
• Adding a wildcard symbol may retrieve word variants: wenn man ghana health gaps ((yan liang) or (((yang jin) or (yang jui)))) dang hari ;*.