Perhaps you should try some spelling variations:
technologies energy » technologies new, technologies any
communication costs » communication systems, communication efforts, communication skills
urban development » human development
development urban » development bank, development band, development update
la communication » _ communication, mass communication, oral communication
urban africa » urban area, rural africa
costs urban » cost urban, most urban, crisis urban

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies energy information _ de la communication costs urban development urban africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies energy information _ de la communication costs urban development urban africa.*.