Perhaps you should try some spelling variations:
communication system » communication systems, telecommunication system, communication series
technologies 4.2 » technologies 3.2, technologies 4.1, technologies 4.5
4.2 informations » 4.2 information, 2.2 information, 3.2 information
a communication » la communication, data communication, data communications
1 afrique » l afrique, en afrique, 1 enrique
und dr » und der, und de
dr a » dr h, dr e

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

• Adding a wildcard symbol may retrieve word variants: technologies 4.2 informations und dr a communication system a development 1 afrique.*.