Perhaps you should try some spelling variations:
oral communication » personal communication
dams development » dam development, gas development, ads development
communication 6 » communication _, communication a, communication 3
development des » development does, development desd, development ds
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
des afrique » en afrique, de l'afrique
debt oral » debt moral, debt oil
6 debt » 3 debt, 4 debt
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 variation 6 debt oral communication 6 dams development des afrique.*.