Perhaps you should try some spelling variations:
personal communication » interpersonal communication
de developpement » sme development
developpement l » developpement il, developpement la, developpement de
variation bei » variation des, variation der, variation _
der personal » der personalen, der personen, der person
l afrique » en afrique
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation bei der personal communication a de developpement l afrique.*.