Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
process integrated » process integration
integrated money » integrated model, integrated models, integrating money
4 communications » 14 communications, 4 communication, 2 communications
developpement de » developpement des, developpement durable
ecology process » technology process, economic process, recovery process
a developpement » au developpement, de developpement, le developpement
trade 4 » trade _, trade a
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: ecology process integrated money trade 4 communications costs a developpement de l'afrique.*.