Perhaps you should try some spelling variations:
5.3 communication » 2.3 communication, 4.3 communication, 1.3 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 5.3 » case 2.3, case 5.2, case 3.3
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 5.3 communication costs le developpement en afrique.*.