Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
process integrating » process integration, process integrated, processes integration
2 communications » 2 communication, 3 communications, 4 communications
ecology process » technology process, economic process, recovery process
4 developpement » de developpement, le developpement, et developpement
integrating 2 » integrating _, integrating a, integrating r
des afrique » en afrique, de l'afrique
2 trade » 1 trade, 4 trade
trade 2 » trade _, trade a, trade 4
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: ecology process integrating 2 trade 2 communications costs 4 developpement des afrique.*.