Perhaps you should try some spelling variations:
clean development » human development, urban development, child development
information flow » information flows, information _
la communication » _ communication, mass communication, oral communication
communication a » communication _, communications _, communicating _
development en » development menu, development can, development _
flow de » flows do
a clean » _ clean, a clear

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information flow de la communication a clean development en afrique.*.