Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
variation series » education series, action series, edition series
l developpement » le developpement, de developpement, et developpement
developpement l » developpement il, developpement la, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
series der » serien der, series de, series d
der verbal » des verbal, der verbalen, der verband
l afrique » en afrique
a l » a la

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

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