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 rates » innovation rate, innovation notes, innovation race
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
rates care » rates cape, states care, rates have
de afrique » de l'afrique, en afrique, l afrique
care 2.7 » care 25.7, care 2.1, care 2.4
costs au » costs a, costs amy, costs _

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 care 2.7 communication costs au developpement de afrique.*.