Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
process integrated » process integration
14 communications » 10 communications, 14 communication, 4 communications
developpement de » developpement des, developpement durable
ecology process » technology process, economic process, recovery process
a developpement » au developpement, de developpement, le developpement
trade 14 » trade 4, trade 1, trade 2014
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 _ trade 14 communications costs a developpement de l'afrique.*.