Perhaps you should try some spelling variations:
oral communication » personal communication
variation housing » variation using, migration housing, variations during
et developpement » de developpement, le developpement, test development
typologien de » typologien der, typologie des, typologie der
de variation » der variation, die variation, does variation
housing debt » housing dead, housing deep, rising debt
des afrique » en afrique, de l'afrique
debt oral » debt moral, debt oil
a et » a set, a net, a bet

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

• Adding a wildcard symbol may retrieve word variants: typologien de variation housing debt oral communication a et developpement des afrique.*.