Perhaps you should try some spelling variations:
emitter communication » matter communication, twitter communication, written communication
technologies used » technologies based, technology used, technologies _
das developpement » des developpements, de developpement, du developpement
used information » user information, use information, based information
developpement en » developpement et, developpement des, developpement de
communication 1 » communication _, communication a, communication 3
information 3 » information 2
3 gas » _ gas, 2 gas

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

• Adding a wildcard symbol may retrieve word variants: technologies used information 3 gas emitter communication 1 das developpement en afrique.*.