Perhaps you should try some spelling variations:
oral communication » personal communication
variation housing » variation using, migration housing, variations during
u developpement » du developpement, au developpement, ou developpement
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 u » a un, a us

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 u developpement des afrique.*.