Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
des developpements » deux developpements, de developpement, et developpements
developpements l » developpements de, developpement il, developpement la
variation over » variation der, variation notes, variation des
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
does radio » das radio
over does » cover does, der does, over de
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation over does radio communications _ des developpements l afrique.*.