Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
innovation rates » innovation rate, innovation notes, innovation race
developpement du » developpement de, developpement des, developpement et
4 developpement » de developpement, le developpement, et developpement
rates cape » rates have
du afrique » en afrique, l afrique, de l'afrique
cape 6.2 » care 6.2, case 6.2, date 6.2
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology change innovation rates cape 6.2 communication costs 4 developpement du afrique.*.