Perhaps you should try some spelling variations:
oral communication » personal communication
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
variation 6 » variation _, variations _, variation des
first oral » first organ, first deal, first drupal
6 first » 2 first, 3 first, 1 first

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

• Adding a wildcard symbol may retrieve word variants: typology der variation 6 first oral communication _ du developpement en afrique.*.