Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
oral communication » mobile communication, _ communication, risk communication
development bank » development _
technical chief » technical brief, technical change, technical review
information age » information gaps, information laws, information _
bank afrique » bank africa

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

• Performing a fuzzy search may retrieve terms with similar spellings: technical chief information age de oral communication costs _ development bank afrique.~.
• Adding a wildcard symbol may retrieve word variants: technical chief information age de oral communication costs _ development bank afrique.*.