Perhaps you should try some spelling variations:
oral communication » personal communication
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation der » variation des, variation bei, variation _
development d » development ds, development 1, development did
does oral » does formal, does oil
d afrique » l afrique, en afrique, de l'afrique
4 ads » _ ads, 4 abs, 4 als
4 add » _ add, 1 add, 3 add

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie does variation der does oral communication ((4 ads) OR (4 add)) development d afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie does variation der does oral communication ((4 ads) OR (4 add)) development d afrique.*.