Perhaps you should try some spelling variations:
oral communication » personal communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
variation der » variation des, variation bei, variation _
de variation » der variation, die variation, does variation
typology de » typology _, typology 6, typology a
es oral » vs oral, des moral, new oral
media a » media _, media 1, media 3
der es » der est, oder es, dar es

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

• Adding a wildcard symbol may retrieve word variants: typology de variation der es oral communication media a developpement en afrique.*.