Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
communication 4.3 » communication 3.3, communication 4.1, communication 3
variation series » education series, action series, edition series
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
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
4.3 du » 4.3 due, 4.3 de, 4.3 drug

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 4.3 du developpement en afrique.*.