Perhaps you should try some spelling variations:
oral communication » personal communication
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
variation notes » variation models, variation des, variation forms
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
notes den » notes modern, notes wooden
den oral » den ort, new oral
a does » 2 does, 4 does, 1 does

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation notes den oral communication a does developpement en afrique.*.