Perhaps you should try some spelling variations:
oral communication » personal communication
development lin » development li, development lid, development lie
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation der » variation des, variation bei, variation _
lin afrique » en 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 der variation der water oral communication _ gas development lin afrique.*.