Perhaps you should try some spelling variations:
technologies energy » technologies new, technologies any
oral communication » mobile communication, _ communication, risk communication
communication pour » communication costs, communication modes, communication _
development bank's » development banks, development banking, development band
information gap » information _, information flow
de development » e development, de developpement, code development

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies energy information gap de oral communication pour de development bank's africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies energy information gap de oral communication pour de development bank's africa.*.