Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
3.2 communication » 3 communication, 2.3 communication, de communication
innovation rate » innovation race, innovation create, innovation state
developpement l » developpement il, developpement la, developpement de
rate change » rate changes, price change
change 3.2 » change 3.1, change 2.1, change 2
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology change innovation rate change 3.2 communication costs _ developpement l afrique.*.