Perhaps you should try some spelling variations:
information centers » information contents, information officers
ante communication » parte communication, une communication, vote communication
communication cost » communication costs, communication costa, communications costs
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
developing em » developing e, developing eq, developing amp
centers 3.2 » centers 2.2, centers 3.3, centers 3.8
cost 12.4 » coast 12.4, costs 12.4, cost 2.4
em africa » 1 africa
3.2 ante » 3.2 acute, 3.2 art, 3.2 age

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information centers 3.2 ante communication cost 12.4 developing em africa.*.