Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication 1.1 » communication 4.1, communication 7.1, communication 1.3
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 models » series model, service models
models verbal » models several, models versus, models global
de afrique » de l'afrique, en afrique, l afrique
1.1 de » 1.1 die, 1.1 der, 2.1 de

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 models verbal communication 1.1 de developpement de afrique.*.