Perhaps you should try some spelling variations:
rural ghana » rural china, rural change
china rural » china's rural, chile rural, china real
dong liang » song ligang, dong hoang, dong ping
wang liang » wang yang
john song » john wong, john bonn, john ngosong
jin song » jie song, kim song, jin ying

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((dong liang) OR (wang liang)) can china rural ghana ((jin song) or (john song)) min ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((dong liang) OR (wang liang)) can china rural ghana ((jin song) OR (john song)) min ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((dong liang) OR (wang liang)) can china rural ghana ((jin song) or (john song)) min ;".
• Adding a wildcard symbol may retrieve word variants: ((dong liang) OR (wang liang)) can china rural ghana ((jin song) or (john song)) min ;*.