Perhaps you should try some spelling variations:
integration social » international social
duty integration » dutch integration, data integration, why integration
ghana turning » rwanda turning, uganda turning
ghana mining » ghana making, ghana rising, ghana combining
import duty » import duties

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: (( import duty integration social. ) OR ( supply ((ghana turning) OR (ghana mining)) services. ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( import duty integration social. ) or ( supply ((ghana turning) OR (ghana mining)) services. ))~".
• Adding a wildcard symbol may retrieve word variants: (( import duty integration social. ) or ( supply ((ghana turning) OR (ghana mining)) services. ))*.