Perhaps you should try some spelling variations:
technologies valuable » technologies available, technologies value, technologien variabler
oral communication » personal communication
information need » information needs, information needed, information speed
de development » e development, ce development, de developpement
a afrique » l afrique, en afrique
costs de » costs _, costs 4, costs a
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 valuable information need de oral communication costs de development a afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies valuable information need de oral communication costs de development a afrique.*.