Perhaps you should try some spelling variations:
world communication » work communication, wired communications, good communication
technologies 3 » technologies _, technologies 4, technologies 2
3 information » 1 information
20 developing » 2 developing, 10 developing, 24 developing
contents co » contents how, contents lcm, contents 1
co world » co word, two world, wto world
costs 20 » costs 60, costs 2.3, costs 2.1

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 information contents co world communication costs 20 developing _ africa.*.