Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
information costs » information contents, information centers, information content
developing human » development human, developing a, developing asia
technologies 2 » technologies _, technologies 4
3 developing » 3 development
costs 2 » costs 20, costs _, costs 4
2 voice » _ voice, a voice, 5 voice
costs 3 » costs _, costs 4, costs a
accessed. » access., assessed., accepted.

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information costs 2 voice communication costs 3 developing human accessed.*.