Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change innovation » change information, chain innovation, trade innovation
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
innovation rates » innovation rate, innovation notes, innovation race
developpement la » developpement de, developpement et, developpement du
a developpement » au developpement, de developpement, le developpement
rates ware » rates wage, rates have, rates cape
la afrique » l afrique, la fabrique, en afrique
ware 6.2 » care 6.2, ware 3.2, date 6.2
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 innovation rates ware 6.2 communication costs a developpement la afrique.*.