Perhaps you should try some spelling variations:
oral communication » personal communication
bet developpement » et developpement, de developpement, le developpement
developpement la » developpement de, developpement et, developpement du
variation basin » variation basic, variation bei, variation using
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
la afrique » l afrique, la fabrique, en afrique
a bet » a best, a bent, a beta
area » areas

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation basin area oral communication a bet developpement la afrique.*.