Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
information 4 » information 2
technology 1 » technology _
der oral » der moral, der ort, der orte
costs de » costs _, costs 4, costs a
4 der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information 4 der oral communication costs de developpement en afrique.*.