Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
open development » clean development, driven development, human development
communication 2 » communication _, communication a, communication 3
development en » developpement en, development menu, development eco
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
des device » vs device, less devices, types device
des des » des deas, des dem, des 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 des des device communication 2 open development en afrique.*.