Perhaps you should try some spelling variations:
oral communication » personal communication
dams developpement » dams development, de developpement, du developpement
communication 6 » communication _, communication a, communication 3
de variations » de variation, 1er variations, ier variations
typologie de » typologie des, typologie der, typologien der
des afrique » en afrique, de l'afrique
debt oral » debt moral, debt oil
6 dams » 6 das, _ dams, 6 days

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

• Adding a wildcard symbol may retrieve word variants: typologie de variations _ debt oral communication 6 dams developpement des afrique.*.