Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
estate development » trade development, sme development, future development
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 verbal » _ verbal, a verbal, 3 verfall
3 estate » 3 state, _ estate, _ estates
needs 3 » needs _, needs a

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 verbal communication 3 estate development case africa.*.