Perhaps you should try some spelling variations:
oral communication » personal communication
developpement l » developpement il, developpement la, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
l afrique » en afrique
der oral » der moral, der ort, der orte
13 des » 13 does, 13 der, 13 das
6 der » _ der, 2 der, 3 der
13 de » 13 die, 13 der, 13 le

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie der variation 6 der oral communication ((13 de) OR (13 des)) developpement l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation 6 der oral communication ((13 de) OR (13 des)) developpement l afrique.*.