Perhaps you should try some spelling variations:
oral communication » personal communication
technologies aids » technologies varies, technologies a, technologies de
aids information » chandos information, series information
information need » information needs, information needed, information speed
developpement en » developpement et, developpement des, developpement de
need de » need le, need fide, need one
de oral » de otras, new oral

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

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