Perhaps you should try some spelling variations:
oral communication » personal communication
information need » information needs, information needed, information speed
city development » capacity development, policy development, community development
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
china africa » cpia africa, china asia
costs city » cost city
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 a information need de oral communication costs city development china africa.~.
• Adding a wildcard symbol may retrieve word variants: technologies a information need de oral communication costs city development china africa.*.