Perhaps you should try some spelling variations:
communication layer » communication law, communication united
oral communication » personal communication
la developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
firm oral » firm rural
des firm » des firmes, des films, des filme
layer la » layer l2, layer l3, layer l4

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation des firm oral communication layer la developpement en afrique.*.