Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
technologies 4 » technologies _
4 information » 2 information, 1 information
systems leur » systems lens, systems level, systems legal
about due » about blue, about dice, about dthe
due de » vue de, que de, due date

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information about due de communication systems leur developpement en afrique.*.