Perhaps you should try some spelling variations:
u.s communication » u.s communications, 2.3 communication, 3.2 communication
communication 1 » communication _, communication a, communication 3
e developpement » de developpement, le developpement, et developpement
technologies 2 » technologies _, technologies 4
des afrique » en afrique, de l'afrique
4.2 der » 2.2 der, 3.2 der
der u.s » over u.s, year u.s
1 e » 1 le

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 4.2 der u.s communication 1 e developpement des afrique.*.