Perhaps you should try some spelling variations:
dauer communications » paper communications, data communications, face communications
development 2014 » development 2.1, development 1, development 2.3
typologies art » typologies et, typologies first, typologies _
art variation » care variation, a variation, about variation
variation der » variation des, variation bei, variation _
thesen dauer » themen dauer, thesen der, thesen zur
der thesen » der themen, den thesen, vier thesen

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

• Adding a wildcard symbol may retrieve word variants: typologies art variation der thesen dauer communications _ gas development 2014 afrique.*.