Perhaps you should try some spelling variations:
clean development » human development, urban development
technologies key » technologies any, technologies know, technologies _
information gaps » information gap
key information » energy information
de mobile » die mobile, e mobile, does mobile
gaps de » gaps do, camps de, gaps new
a clean » _ clean, a clear

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

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