Perhaps you should try some spelling variations:
oral communication » personal communication
dams development » dam development, gas development, ads development
development lid » development led, development li, development lie
variation der » variation des, variation bei, variation _
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
lid afrique » l afrique
der water » der vater, under water, over water

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation der water oral communication _ dams development lid afrique.*.