Perhaps you should try some spelling variations:
oral communication » personal communication
la developpement » le developpement, de developpement, et developpement
developpement l » developpement il, developpement la, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
l afrique » en afrique
dem ddr » der ddr, dem der, des ddr
den ddr » der ddr, des ddr

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: typologie der variation ((dem ddr) OR (den ddr)) oral communication a la developpement l afrique.~.
• Adding a wildcard symbol may retrieve word variants: typologie der variation ((dem ddr) or (den ddr)) oral communication a la developpement l afrique.*.