Perhaps you should try some spelling variations:
clean development » human development, urban development
technologies new » technologies _, technologies 4, technologies 2
information gaps » information gap
new information » 2 information
costs clean » costs clear
a mobile » _ mobile
gaps a » gaps _, gaps 3, maps a

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 gaps a mobile communication costs clean development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies new information gaps a mobile communication costs clean development _ afrique.*.