Perhaps you should try some spelling variations:
6.1 communication » 4.1 communication, 1.1 communication, 3.1 communication
user information » der information, other information, user innovation
developpement de » developpement des, developpement durable
technology user » technology users, technology use, technology used
information use » information und, information 2
a developpement » au developpement, de developpement, le developpement
use policy » use policies
policy 6.1 » policy 3.1, policy 2.1, policy 1
de afrique » de l'afrique, en afrique, l afrique
systems » system

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

• Adding a wildcard symbol may retrieve word variants: technology user information use policy 6.1 communication systems a developpement de afrique.*.