Perhaps you should try some spelling variations:
communication skills » communication services, communication systems
china communication » china communications, chief communication, china's communications
clean development » human development, urban development
technologien 1 » technologies 1, technologien _, technologien 4
skills clean » skills can, spills cleanup, skills create
1 afrique » l afrique, en afrique, 1 enrique
flows 4 » flows _, flows 1, flows 2
4 china » 2 china

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

• Adding a wildcard symbol may retrieve word variants: technologien 1 information flows 4 china communication skills clean development 1 afrique.*.