Perhaps you should try some spelling variations:
communication model » communication media
oral communication » personal communication
technologies over » technologies offer, technologies other, technologies drivers
information needs » information networks
urban development » human development
over information » other information, der information, user information
model urban » modern urban, modeling urban
a africa » 1 africa, can africa, em africa
needs 2 » needs _, needs a, needs 3
2 oral » _ 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 over information needs 2 oral communication model urban development a africa.*.