Perhaps you should try some spelling variations:
informal communication » internal communication, information communication, internal communications
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
a developpement » au developpement, de developpement, le developpement
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
dit informal » do informal, i informal, fight informal
using dit » using dits, using dt, using dicot
media a » media _, media 1, media 3

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation using dit informal communication media a developpement en afrique.*.