Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
14.4 developing » 1.4 developing, 12.4 developing, 10.4 developing
technologies 2 » technologies _, technologies 4
developing em » developing e, developing eq, developing amp
centers how » center how, centers hold, century how
cost 14.4 » costs 14.3, cost 2.4, cost 1.2
em africa » 1 africa
how de » how doe, how do, how ae

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information centers how de communication cost 14.4 developing em africa.*.