Perhaps you should try some spelling variations:
oral communication » personal communication
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
ideologie der » ideologie und, typologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
de afrique » de l'afrique, en afrique, l afrique
its oral » its oil, u.s oral, vs oral
des its » des ias, des ids, des faits

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

• Adding a wildcard symbol may retrieve word variants: ideologie der variation des its oral communication _ le developpement de afrique.*.