Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication series » communication services, communication systems, communication skills
developpement du » developpement de, developpement des, developpement et
e developpement » de developpement, le developpement, et developpement
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
est verbal » post verbal, des verbal
du afrique » en afrique, l afrique, de l'afrique
series e » series _, series 1, series 2

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation _ est verbal communication series e developpement du afrique.*.