Perhaps you should try some spelling variations:
oral communication » personal communication
das developpement » des developpements, de developpement, du developpement
developpement de » developpement des, developpement durable
variation von » variationen von, variation _, variation 6
ideologie de » ideologie der, ideologie des, ideologie du
de variation » der variation, die variation, does variation
types oral » types formal
von types » loan types, ten types
a das » 1 das, 2 das, 3 das

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

• Adding a wildcard symbol may retrieve word variants: ideologie de variation von types oral communication a das developpement de l'afrique.*.