Perhaps you should try some spelling variations:
oral communication » personal communication
set developpement » et developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation dem » variation des, variation der, variation de
dem ddr » der ddr, dem der, den ddr
a set » _ set

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation dem ddr oral communication a set developpement de l'afrique.*.