Perhaps you should try some spelling variations:
oral communication » personal communication
developpement la » developpement de, developpement et, developpement du
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation 6 » variation _, variations _, variation des
la afrique » l afrique, la fabrique, en afrique
dr oral » dr osrar
3 des » 3 der, a des, _ des
3 das » 1 das, 2 das
6 dr » 6 der, 16 dr, _ dr

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typologie does variation 6 dr oral communication ((3 des) OR (3 das)) developpement la afrique.~.
• Adding a wildcard symbol may retrieve word variants: typologie does variation 6 dr oral communication ((3 des) or (3 das)) developpement la afrique.*.