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 being » variation bei, variation using, variation among
und variation » und variationen, 2 variation, 4 variation
being knew » being new
a de » a die, a der, a des
theorie » theories

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

• Adding a wildcard symbol may retrieve word variants: theorie und variation being knew verbal communication a de developpement en afrique.*.