Perhaps you should try some spelling variations:
technology trade » technology trends, technology transfer, technology transfers
10 communication » 1 communication, de communication, 3 communication
developpement du » developpement de, developpement des, developpement et
4 developpement » de developpement, le developpement, et developpement
integration 1 » integration 3, integration 4, integration 2
du afrique » en afrique, l afrique, de l'afrique
french 10 » french 2.0, french _, french 5
1 french » 12 french, _ french, a french
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 integration 1 french 10 communication costs 4 developpement du afrique.*.