Perhaps you should try some spelling variations:
trade development » software development
communication 2 » communication _, communication a, communication 3
development eco » development second, development east, development menu
technologies 2 » technologies _, technologies 4
information 1 » information 2, information 3, information 3.2
eco afrique » en afrique
2 trade » 1 trade, 4 trade
2 mass » 25 mass, a mass, 2 maps
1 mass » a mass

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 1 ((2 mass) OR (1 mass)) communication 2 trade development eco afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 information 1 ((2 mass) OR (1 mass)) communication 2 trade development eco afrique.*.