Perhaps you should try some spelling variations:
u.s communication » u.s communications, 2.3 communication, 3.2 communication
use informations » use information, user information, house information
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
technology use » technology 1, technology 2.2, technology 3
und policy » und policey, land policy, aid policy
policy u.s » policy 3.1, policy 2.1, policy 3.3
systems de » systemes de, systems der, systems die
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology use informations und policy u.s communication systems de developpement l afrique.*.