Perhaps you should try some spelling variations:
developing controlled » developing control, developing countries
face communication » voice communication, de communication, time communication
controlled access » controlling access, control access, controlled cross
information case » information based, information can, information costs
technologies 2 » technologies _, technologies 4
4.1 developing » 3.1 developing, 4 developing, 3.3 developing
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
case 2 » case 1
2 face » _ face, a face, 2 fact

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information case 2 face communication costs 4.1 developing controlled access.*.