Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication series » communication services, communication systems, communication skills
de developpement » sme development
developpement du » developpement de, developpement des, developpement et
typologien der » typologie der, typologie des, apologien 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 de » series d, series e, series new

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

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