Perhaps you should try some spelling variations:
communications networks » communication networks, telecommunications networks, telecommunications network
al communications » 10 communications, 14 communications, 2 communications
developpement en » developpement et, developpement des, developpement de
2 developpement » de developpement, le developpement, et developpement
technologies 4 » technologies _
4 information » 2 information, 1 information
networks 2 » networks _, networks 1, networks a
die al » die als, die alt, die alte

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information _ die al communications networks 2 developpement en afrique.*.