Perhaps you should try some spelling variations:
oral communication » mobile communication, _ communication, risk communication
technologies more » technologies improve, technologies volume, technologies annex
more information » price information, trade information, chief information
information need » information needs, information based, information age
de development » e development, de developpement, code development
systems de » systems do, systems key, systems _

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies more information need de oral communication systems de development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies more information need de oral communication systems de development _ afrique.*.