Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
innovation notes » innovation nodes, innovation node, innovation contest
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
notes wage » rates wage
l afrique » en afrique
wage 2.7 » wage 2.2, stage 2.7
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 innovation notes wage 2.7 communication costs a developpement l afrique.*.