Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information costs » information contents, information centers, information content
developing basic » developing asia, developing based, developing brazil
technologies 2 » technologies _, technologies 4
4 developing » 3 developing
costs dhs » costs ch
dhs data » das data, hbs data, gas data
costs 4 » costs _, costs a, costs 4.2

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 dhs data communications costs 4 developing basic access.*.