Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
does developpement » de developpement, des developpements, does development
developpement l » developpement il, developpement la, developpement de
variation over » variation der, variation notes, variation des
des variation » does variation, de variation, der variation
does radio » das radio
over does » cover does, der does, over de
l afrique » en afrique
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 over does radio communications _ does developpement l afrique.*.