Perhaps you should try some spelling variations:
oral communication » personal communication
developpement la » developpement de, developpement et, developpement du
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
la afrique » l afrique, la fabrique, en afrique
dr oral » dr osrar
3 des » 3 der, 3 das, _ des
a des » a der, a das

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 _ dr oral communication ((3 des) OR (a des)) developpement la afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation _ dr oral communication ((3 des) OR (a des)) developpement la afrique.*.