Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
development bank » development _
information gap » information _, information flow
technologies a » technologies _
a information » _ information, land information, award information
bank afrique » bank africa
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 a information gap de mobile communication costs _ development bank afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies a information gap de mobile communication costs _ development bank afrique.*.