Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
based variation » based validation, based valuation, based vaccination
communication 1 » communication _, communication a, communication 3
developpement l » developpement il, developpement la, developpement de
colonies based » colleges based, policies based, ontologies based
variation der » variation des, variation bei, variation _
l afrique » en afrique
der oral » der moral, der ort, der orte
der der » oder der, der de, der den
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: colonies based variation der der oral communication 1 de developpement l afrique.*.