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