Perhaps you should try some spelling variations:
oral communication » personal communication
developpements de » developpement de, developpement des, developpement du
a developpements » et developpements, au developpement, des developpements
how variation » how valuation, does variation, four variation
variation und » variation _, variablen und, variation 6
typology how » typology from, typology _, typology 4.1
de afrique » de l'afrique, en afrique, l afrique
vs oral » u.s oral
media a » media _, media 1, media 3
und vs » und v2, bound vs

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

• Adding a wildcard symbol may retrieve word variants: typology how variation und vs oral communication media a developpements de afrique.*.