Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
variation forms » variation from, variation notes, variation series
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
forms dm » formes de, formas de, forms _
dm radio » im radio, fm radio, das radio

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

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