Perhaps you should try some spelling variations:
oral communication » personal communication
la developpement » le developpement, de developpement, et developpement
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
des afrique » en afrique, de l'afrique
debt oral » debt moral, debt oil

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation _ debt oral communication a la developpement des afrique.*.