Perhaps you should try some spelling variations:
clean development » human development, urban development
technologien des » technologien fur, technologien und, technologies 2
sa communication » la communication, a communication, asia communication
des information » des informations, does information, dis information
information 3 » information 2
1 african » _ african, 1 africa, 2 african
area sa » area ssa, area a, area sc
a clean » _ clean, a clear
3 area » 1 area, 1.3 area, 3.1 area

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 3 area sa communication a clean development 1 african.*.