Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
does developpement » de developpement, des developpements, does development
developpement du » developpement de, developpement des, developpement et
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation over » variation der, variation notes, variation des
does radio » das radio
du afrique » en afrique, l afrique, de l'afrique
over does » cover does, der does, over de

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation over does radio communications _ does developpement du afrique.*.