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
technology change » technological change, technological changes
a development » _ development, clean development, asian development
flows do » flows _
do oral » do rural
costs a » costs _

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

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