Perhaps you should try some spelling variations:
u.s communication » u.s communications, 2.3 communication, 3.2 communication
communication 12 » communication 1, communication 2, communication 10
developpement de » developpement des, developpement durable
e developpement » de developpement, le developpement, et developpement
technologies 2 » technologies _, technologies 4
de afrique » de l'afrique, en afrique, l afrique
3.2 der » 2.2 der
der u.s » over u.s, year u.s
12 e » 12 et, 12 _, 12 a

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 3.2 der u.s communication 12 e developpement de afrique.*.