Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de 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
innovation rate » innovation race, innovation create, innovation state
rate east » rates east, trade east, state east
east 3.2 » east 9.3.2, east 12, east 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology trade innovation rate east 3.2 communication costs _ developpement en afrique.*.