Perhaps you should try some spelling variations:
communication services » telecommunications services
clean development » human development, urban development
information gaps » information gap
services clean » services can, services chap, services check
technology 1 » technology _
gaps new » gaps how
new mass » new masks, new maps, new class

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

• Performing a fuzzy search may retrieve terms with similar spellings: technology 1 information gaps new mass communication services clean development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technology 1 information gaps new mass communication services clean development _ afrique.*.