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 does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation dem » variation des, variation der, variation de
l afrique » en afrique
dem ddr » der ddr, dem der, den ddr

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation dem ddr oral communication a la developpement l afrique.*.