Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
technologies can » technologies a, technologies _, technology can
can information » care information, change information, fund information
development can » development bank, development band, development case
costs human » lost human
de mobile » does mobile, _ mobile, a mobile

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies can information _ de mobile communication costs human development can afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies can information _ de mobile communication costs human development can afrique.*.