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
information 1.7 » information 12.7, information 1.2, information 1.3
technologies 4 » technologies _
4 information » 2 information, 1 information
4.2 developed » 3.2 developed, 4.5 developed, 14.4 developed

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 1.7 _ voice communications costs 4.2 developed contexts assessed.*.