Perhaps you should try some spelling variations:
oral communication » personal communication
developpements de » developpement de, developpement des, developpement du
1 developpements » et developpements, des developpements, de developpement
variation using » variations during, variation und, variation among
de variation » der variation, die variation, does variation
typology de » typology _, typology 6, typology a
de afrique » de l'afrique, en afrique, l afrique
using e » using _, using a, using 4d
media 1 » media _
e oral » _ oral, 2 oral, 4 oral

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

• Adding a wildcard symbol may retrieve word variants: typology de variation using e oral communication media 1 developpements de afrique.*.