Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation using » variations during, variation und, variation among
communication 1 » communication _, communication a, communication 3
apologien der » typologien der, apologie des, ideologien der
der variation » de variation, does variation, die variation
des verbal » des verbalen, des verbs, models verbal
using des » using pdes, using aes, using dbs
1 de » 1 die, 1 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: apologien der variation using des verbal communication 1 de developpement en afrique.*.