Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
technology use » technology 1, technology 2.2, technology 3
use innovation » user innovation, une innovation, sme innovation
model date » model data, model kate, model update
de afrique » de l'afrique, en afrique, l afrique
date 6.2 » daten 6.2, data 6.2, date 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology use innovation model date 6.2 communication costs _ developpement de afrique.*.