Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
innovation rates » innovation rate, innovation notes, innovation race
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
a developpement » au developpement, de developpement, le developpement
rates vary » taxes vary
costs a » costs _, costs 4
vary 3 » vary _, ovary 39, vary 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology change innovation rates vary 3 communication costs a developpement en afrique.*.