Perhaps you should try some spelling variations:
3.3 communication » 2.3 communication, 3.2 communication, 3.5 communication
technology trade » technology trends, technology transfer, technology transfers
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
integration 3.2 » integration 4
case 3.3 » cases 3.3, case 2.3, case 3.1
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration 3.2 case 3.3 communication costs le developpement en afrique.*.