Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
technology chain » technology can, technology china, technology changing
chain innovation » chain integration, open innovation, green innovation
innovation cases » innovation case, innovation based, innovations case
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
cases case » causes case, case case, crises case
de afrique » de l'afrique, en afrique, l afrique
case 5.2 » case 4.2, case 3.2, case 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 cases case 5.2 communication costs a developpement de afrique.*.