Perhaps you should try some spelling variations:
ghana health » china health, data health
health daun » health data, health due, health death
yang eming » yang keming, yang jing, yang using
wang kong » wang hong, hong kong, wang yang
wang yong » wang yang, wang hyoung, wang yan
yang mind » yang cindy, yang jin, sang minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang kong) or (wang yong)) ghana health daun ((yang eming) or (yang mind)) young (age OR page) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang kong) OR (wang yong)) ghana health daun ((yang eming) OR (yang mind)) young (age OR page) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang kong) or (wang yong)) ghana health daun ((yang eming) or (yang mind)) young (age OR page) ;".
• Adding a wildcard symbol may retrieve word variants: ((wang kong) or (wang yong)) ghana health daun ((yang eming) or (yang mind)) young (age OR page) ;*.