Perhaps you should try some spelling variations:
5.4 communication » de communication, data 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 5.4 » case 5.2, case 5.3, case 1.4
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 5.4 communication costs le developpement en afrique.*.