Perhaps you should try some spelling variations:
developpement durable » developpement de
formal communication » informal communication, oral communication, moral communication
la developpement » le developpement, de developpement, et developpement
variation und » variation _, variablen und, variation 6
ideologie de » ideologie der, ideologie des, ideologie du
de variation » der variation, die variation, does variation
does formal » loss formal, does formality, des formalen
und does » guns does, und doch, aid does

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

• Adding a wildcard symbol may retrieve word variants: ideologie de variation und does formal communication a la developpement durable afrique.*.