Perhaps you should try some spelling variations:
personal communication » interpersonal communication
warner personal » workers personal, lager personal, paper personal
development en » developpement en, development menu, development eco
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
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 personal communication _ gas development en afrique.*.