Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications costs » communication costs, communications _
developed contexts » developed content, development contexts, developing contexts
contexts assessed » contents assessing, context assessing, contexts affected
technologies 2 » technologies _, technologies 4
information 17 » information 1.7, information 1, information 11
6.4 developed » 6.1 developed, 9.4 developed, 15.4 developed
costs 6.4 » costs 4.4, costs 4.2, costs 2.3

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 17 _ voice communications costs 6.4 developed contexts assessed.*.