Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technology chain » technology can, technology china, technology changing
chain innovation » chain integration, open innovation, green innovation
innovation rates » innovation rate, innovation notes, innovation race
developpement du » developpement de, developpement des, developpement et
a developpement » au developpement, de developpement, le developpement
rates case » rates cape, states case, rates east
du afrique » en afrique, l afrique, de l'afrique
case 6.2 » case 6.12, case f6.2, case 4.2
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: technology chain innovation rates case 6.2 communication costs a developpement du afrique.*.