Perhaps you should try some spelling variations:
rural communication » rural communications, oral communication, moral communication
communication model » communication media
information need » information needs, information needed, information speed
technologies 1 » technologies _, technologies 4, technologies 2
model system » mail system
new rural » new real
need new » need one, led new, need le

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 1 information need new rural communication model system development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 1 information need new rural communication model system development _ afrique.*.