Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change inflation » change information, change innovation, change simulation
la communication » data communication, data communications
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
base la » base a, case la, base load
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 change inflation _ base la communication costs 4 developpement l afrique.*.