Perhaps you should try some spelling variations:
oral communication » personal communication
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
doch oral » doch egal
3 el » _ el
y el » _ el
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 _ doch oral communication ((3 el) OR (y el)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ doch oral communication ((3 el) OR (y el)) developpement de afrique.*.