Perhaps you should try some spelling variations:
u.s communications » 3.1 communications, les communications, nps communications
information 5.5.2 » information 1.5.2, information 5.2.2, information 5.4.2
das developpement » des developpements, de developpement, du developpement
communications 1 » communications 14, communications _, communications a
developpement de » developpement des, developpement durable
technologies 2 » technologies _, technologies 4
5.5.2 der » 3.5.2 der, 5.5.1 der, 5.5.2 die
der u.s » over u.s, year u.s

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 5.5.2 der u.s communications 1 das developpement de l'afrique.*.