Perhaps you should try some spelling variations:
schlange communication » change communication, scholarly communication, science communication
clean development » human development, urban development
communication 2 » communication _, communication a, communication 3
technologies 2 » technologies _, technologies 4
development du » development d, development ds, developpement du
information 2 » information 3
die schlange » die sachlage, die schande, die schranne
du afrique » en afrique, l afrique, de l'afrique
2 clean » _ clean, a clean, 6 clean

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 2 die schlange communication 2 clean development du afrique.*.