Perhaps you should try some spelling variations:
oral communication » personal communication
urban development » human development
information need » information needs, information needed, information speed
technologies 2 » technologies _, technologies 4
a afrique » l afrique, en afrique
need le » need one
le oral » new oral
networks » network

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 2 information need le oral communication networks urban development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 2 information need le oral communication networks urban development a afrique.*.