Perhaps you should try some spelling variations:
oral communication » personal communication
use development » case development, sme development, e development
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
efforts use » efforts have, efforts role
about de » about due, about dead, about debt
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 a information about de oral communication efforts use development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies a information about de oral communication efforts use development _ afrique.*.