Perhaps you should try some spelling variations:
innovation changed » innovation change, innovation changes, innovation chance
3.7 communication » 3.2 communication, 2.7 communication, 3.5 communication
technology trade » technology trends, technology transfer, technology transfers
trade innovation » trade information, drive innovation, trade integration
developpement en » developpement et, developpement des, developpement de
4 developpement » de developpement, le developpement, et developpement
changed face » changed file, changing face, changed since
face 3.7 » race 3.7
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 trade innovation changed face 3.7 communication costs 4 developpement en afrique.*.