Perhaps you should try some spelling variations:
technological model » technological models, technological tools, technological content
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
model innovation » social innovation
developpement de » developpement des, developpement durable
innovation rate » innovation race, innovation create, innovation state
4 developpement » de developpement, le developpement, et developpement
de afrique » de l'afrique, en afrique, l afrique
rate date » rate data, trade date, rate water
date 6.2 » daten 6.2, data 6.2, date 4.2
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technological model innovation rate date 6.2 communication costs 4 developpement de afrique.*.