Perhaps you should try some spelling variations:
technologies volume » technology volume, technologies policies
volume variation » volume evaluation, volume ventilation, volume estimation
10 communication » 1 communication, de communication, 3 communication
variation rates » variation rate, variation notes, vaccination rates
developpement l » developpement il, developpement la, developpement de
rates rates » rates notes
l afrique » en afrique
rates 10 » gates 10, rates 1, rates 19

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

• Adding a wildcard symbol may retrieve word variants: technologies volume variation rates rates 10 communication costs _ developpement l afrique.*.