Perhaps you should try some spelling variations:
oral communication » personal communication
developpement l » developpement il, developpement la, developpement de
der variation » de variation, does variation, die variation
variation der » variation des, variation bei, variation _
apologie der » apologien der, apologie des, typologie der
l afrique » en afrique
ex oral » new oral
der ex » der eg
law de » law die

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