Perhaps you should try some spelling variations:
developpement durable » developpement de
oral communication » personal communication
au developpement » du developpement, de developpement, le developpement
formation among » formalization among, formation across
typologie der » typologie des, ideologie der
der formation » der information, der reformation, der formativen
among donors » among doctors, among actors

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

• Adding a wildcard symbol may retrieve word variants: typologie der formation among donors oral communication _ au developpement durable afrique.*.