Perhaps you should try some spelling variations:
u.s communications » 3.1 communications, les communications, nps communications
communications 5 » communications _, communications a, communications pt
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
technologies 4 » technologies _
4 information » 2 information, 1 information
information 3 » information 2
der u.s » over u.s, year u.s
3 der » _ der, 2 der
5 du » 5 de, 5 do, 5 zu

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 3 der u.s communications 5 du developpement de l'afrique.*.