Perhaps you should try some spelling variations:
der developpements » des developpements, deux developpements, de developpement
oral communication » personal communication
developpements la » developpement la, developpements de, developpement de
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
la afrique » l afrique, la fabrique, en afrique
dr oral » dr osrar

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(typologie OR typologies) des variation des dr oral communication _ der developpements la afrique.~".
• Adding a wildcard symbol may retrieve word variants: (typologie OR typologies) des variation des dr oral communication _ der developpements la afrique.*.