Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
informal group » informal groups, informal gold, informal out
group der » groups der, group dev, group dph
media de » media die, media der, media diet

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

• Adding a wildcard symbol may retrieve word variants: technologie _ informal group der online communication media de developpement en afrique.*.