Perhaps you should try some spelling variations:
technological trade » technological trends, technological arab, technological image
trade innovation » trade information, drive innovation, trade integration
developpement en » developpement et, developpement des, developpement de
innovation rate » innovation race, innovation create, innovation state
4 communication » 3 communication, 5.4 communication, de communication
a developpement » au developpement, de developpement, le developpement
rate east » rates east, trade east, state east
costs a » costs _, costs 4
east 4 » east _, east a, east 5

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

• Adding a wildcard symbol may retrieve word variants: technological trade innovation rate east 4 communication costs a developpement en afrique.*.