Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
communications a » communications _, communications law, communications media
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
over does » cover does, der does, over de
a des » a der, a das

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 a des developpements en afrique.*.