Perhaps you should try some spelling variations:
developpement durable » developpement de
oral communication » personal communication
le developpement » de developpement, sme development
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
typology des » typologie des, typologie der, typology _
new oral » new moral, knew moral, new rural
der new » under new, der neue
a le » a les, a la, a l

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

• Adding a wildcard symbol may retrieve word variants: typology des variation der new oral communication a le developpement durable afrique.*.