Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
changes innovation » change innovation, change innovations, changing innovation
innovation rate » innovation race, innovation create, innovation state
4 communication » 3 communication, 5.4 communication, de communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
rate case » state case, write case, rate caps
l afrique » en afrique
costs 4 » costs _, costs a, costs 4.2
case 4 » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technological changes innovation rate case 4 communication costs 4 developpement l afrique.*.