Perhaps you should try some spelling variations:
information centers » information contents, information officers
debt communication » de communication, et communication, get communication
communication cost » communication costs, communication costa, communications costs
technologies 4 » technologies _
4 information » 2 information, 1 information
15 developing » 1 developing, 5 developing, 10 developing
developing em » developing e, developing eq, developing amp
centers 1 » centers 10, centers 21, centers _
em africa » 1 africa
cost 15 » cost 12, cost 5, cost 11.5
1 debt » 3 debt, 4 debt

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centers 1 debt communication cost 15 developing em africa.*.