Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
technology chain » technology can, technology china, technology changing
chain innovation » chain integration, open innovation, green innovation
developpement de » developpement des, developpement durable
innovation face » innovation race, innovation space, innovation finance
a developpement » au developpement, de developpement, le developpement
face case » france case, face based, force case
case 4.2 » case 4.1, 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 face case 4.2 communications costs a developpement de l'afrique.*.