Perhaps you should try some spelling variations:
communication model » communication media
information needed » information needs, information speed, transformation needed
oral communication » personal communication
technologies 2 » technologies _, technologies 4
model system » mail system
needed de » needed die, needed _, needed 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 2 information needed de oral communication model system development _ afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies 2 information needed de oral communication model system development _ afrique.*.