Perhaps you should try some spelling variations:
estate development » trade development, sme development, future development
oral communication » personal communication
information needs » information networks
development case » development china
communication 3 » communication _, communication a
technologies 4 » technologies _
4 information » 2 information, 1 information
case africa » cases africa, care africa, curse africa
3 estate » 3 state, _ estate, _ estates
needs 3 » needs _, needs a
3 oral » _ oral, 2 oral, 4 oral

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies 4 information needs 3 oral communication 3 estate development case africa.*.