Perhaps you should try some spelling variations:
oral communication » personal communication
developpement la » developpement de, developpement et, developpement du
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
a der » _ der, 3 der, 1 der
2 der » _ der
typologie » typologies, typology

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 des variation des dr oral communication ((a der) OR (2 der)) developpement la afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation des dr oral communication ((a der) OR (2 der)) developpement la afrique.*.