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
de development » e development, ce development, de developpement
a afrique » l afrique, en afrique
costs de » costs _, costs 4, costs a
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 _ de oral communication costs de development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies aids information _ de oral communication costs de development a afrique.*.