Perhaps you should try some spelling variations:
oral communication » personal communication
development lid » development led, development li, development lie
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
warner oral » water oral
lid afrique » l afrique
des warner » das warner, des werner, des wiener

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation des warner oral communication _ gas development lid afrique.*.