Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication layer » communication law, communication united
do developpement » de developpement, du developpement, le developpement
developpement l » developpement il, developpement la, developpement de
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
does personal » des personal, roles personal, des personals
variation 6 » variation _, variations _, variation des
l afrique » en afrique
layer do » layer rgo, layer _, layer 2
6 does » 16 does, 2 does, 4 does

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation 6 does personal communication layer do developpement l afrique.*.