Perhaps you should try some spelling variations:
technology change » technological change, technological changes
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
change inflation » change information, change innovation, change simulation
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
inflation a » inflation _, inflation tax, inflation rate
de afrique » de l'afrique, en afrique, l afrique
case 2.7 » case 2.3, case 2.1, case 2.2
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 change inflation a case 2.7 communication costs a developpement de afrique.*.