Perhaps you should try some spelling variations:
activated materials » activated material, active materials, excavated materials
la communication » data communication, data communications
materials trade » materials tda, materials towards
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
technology low » technology flow, technology law, technology led
low activated » from activated, _ activated, 2 activated
l afrique » en afrique
trade la » trade law, trade a, trade laws
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 low activated materials trade la communication costs 4 developpement l afrique.*.