Perhaps you should try some spelling variations:
radio communications » radio communication, data communications
communications pt » communication pt, communications _, communications a
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
de variation » der variation, die variation, does variation
apologie de » apologie des, apologia de, apologien der
does radio » das radio
pt der » pt under

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

• Adding a wildcard symbol may retrieve word variants: apologie de variation _ does radio communications pt der developpement de l'afrique.*.