Perhaps you should try some spelling variations:
trade development » software development
ns communications » nps communications, vs communications, les communications
communications 2 » communications _, communications a, communications 5
technologies 2 » technologies _, technologies 4
development en » developpement en, development menu, development eco
2 trade » 1 trade, 4 trade

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 2 information ((2 der) OR (_ der)) ns communications 2 trade development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 information ((2 der) OR (_ der)) ns communications 2 trade development en afrique.*.