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 3 » communication _, communication a
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
3 de » 3 die, 3 der, 3 des

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 3 de developpement en afrique.*.