Perhaps you should try some spelling variations:
communications networks » communication networks, telecommunications networks, telecommunications network
development case » development china
technologies 4 » technologies _
networks human » networks german, networks germany
4 information » 2 information, 1 information
de data » e data, wide data, de datos

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 4 information _ de data communications networks human development case afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 4 information _ de data communications networks human development case afrique.*.