Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement de » developpement des, developpement durable
variation using » variations during, variation und, variation among
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
using does » using deep, being does, using aes
de afrique » de l'afrique, en afrique, l afrique
does oral » does formal, does oil

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

• Adding a wildcard symbol may retrieve word variants: typology des variation using does oral communication _ de developpement de afrique.*.