Perhaps you should try some spelling variations:
oral communication » personal communication
variation reading » tradition reading, variation among, variation using
de developpement » sme development
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
typology des » typologie des, typologie der, typology _
reading does » lending does, reading die, reading books
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 reading does oral communication _ de developpement de afrique.*.