Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
process integration » process innovation, process information
economic process » economic processes, economic progress, economic problems
1 communications » 10 communications, 14 communications, 1 communication
developpement en » developpement et, developpement des, developpement de
integration die » integration de, integration deep, integration does
a developpement » au developpement, de developpement, le developpement
die trade » die triade, rice trade, die trager
trade 1 » trade _, trade a, trade 4
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: economic process integration die trade 1 communications costs a developpement en afrique.*.