Perhaps you should try some spelling variations:
oral communication » personal communication
information need » information needs, information needed, information speed
development can » development case, development co, development canada
efforts world » efforts old, effort gold, efforts role
can africa » urban africa
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.

• Adding a wildcard symbol may retrieve word variants: technologies _ information need de oral communication efforts world development can africa.*.