Perhaps you should try some spelling variations:
communication efforts » communication networks, communications networks, communication network
risk communication » _ communication, mobile communication
clean development » human development, urban development, child development
development aid » development a, development bank, development _
information et » information act, information _, information need
et does » der does

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies _ information et does risk communication efforts clean development aid afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies _ information et does risk communication efforts clean development aid afrique.*.