Perhaps you should try some spelling variations:
oral communication » personal communication
developpement l » developpement il, developpement la, developpement de
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation es » variation des, variation test, variations des
l afrique » en afrique
den oral » den ort, new oral
3 does » 13 does, 4 does, 1 does
2 does » 4 does

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 die variation es den oral communication ((3 does) OR (2 does)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation es den oral communication ((3 does) OR (2 does)) developpement l afrique.*.