Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
technology trade » technology trends, technology transfer, technology transfers
developpement du » developpement de, developpement des, developpement et
a developpement » au developpement, de developpement, le developpement
du afrique » en afrique, l afrique, de l'afrique
price 2.2 » price 2.3, price 2.4, price 3.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology trade regulation l510 price 2.2 communication costs a developpement du afrique.*.