Perhaps you should try some spelling variations:
communication methods » communication networks, communication network, communications networks
risk communication » _ communication, mobile communication
clean development » human development, urban development, child development
technologies new » technologies _, technologies a
information need » information needs, information based, information age
new information » _ information, energy information, chief information
des risk » does risk, nets risk, key risk

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies new information need des risk communication methods clean development _ africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies new information need des risk communication methods clean development _ africa.*.