Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
variation series » education series, action series, edition series
de developpement » sme development
developpement de » developpement des, developpement durable
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
series dem » series de, series nejm, series d
dem verbal » des verbal, dem verlag, der verbalen
de afrique » de l'afrique, en afrique, l afrique
a de » a die, a der, a des

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 dem verbal communication a de developpement de afrique.*.