Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
mass communication » risk communication, _ communication, mobile communication
clean development » human development, urban development, child development
information gaps » information gap, information flows, information needs
technologies do » technologies _, technologies a, technologies new
do information » job information, how information, _ information
de mass » does mass, ice mass

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies do information gaps de mass communication costs clean development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies do information gaps de mass communication costs clean development _ afrique.*.