Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
process integration » process innovation, process information
10 communications » 10 communication, 14 communications, 2 communications
developpement du » developpement de, developpement des, developpement et
ecology process » technology process, economic process, recovery process
4 developpement » de developpement, le developpement, et developpement
integration 2 » integration 3, integration 4, integration 3.2
du afrique » en afrique, l afrique, de l'afrique
trade 10 » trades 10, trade 1, grade 10
2 trade » 1 trade, 4 trade
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 integration 2 trade 10 communications costs 4 developpement du afrique.*.