Perhaps you should try some spelling variations:
oral communication » personal communication
developpement l » developpement il, developpement la, developpement de
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
l afrique » en afrique
a oral » _ oral, 2 oral, 4 oral
des a » des ag, des _, des 3
a der » _ der, 2 der, 3 der
a de » a die, a des, _ de

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