Perhaps you should try some spelling variations:
service telecommunication » mobile telecommunication, services communication, rural telecommunication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
variation 6 » variation _, variations _, variation des
des service » des services, de service, das service
6 des » 26 des, 6 does, 6 der
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation 6 des service telecommunication _ der developpement en afrique.*.