Perhaps you should try some spelling variations:
communication costs » communication systems, communication efforts, communication skills
change information » trade information, chief information
oral communication » mobile communication, _ communication, risk communication
information about » information flows, information flow
development bank » development _
bank afrique » bank africa
about de » about _
technological » technologies

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

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