Perhaps you should try some spelling variations:
communication pour » communication costs, communication modes, communication _
clean development » human development, urban development, child development
technologies can » technologies a, technologies _, technology can
information gaps » information gap, information flows, information needs
can information » care information, change information, fund information
development can » development bank, development band, development case

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

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