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
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
12 developing » 1.2 developing, 2 developing, 1 developing
developing 1 » developing _, developing a, developing e
centers 4 » centers _, center 4, centers 3
cost 12 » cost 1.2, cost 15, cost 3.2
4 de » 4 die, 4 der, 4 des

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

• Adding a wildcard symbol may retrieve word variants: technologies a information centers 4 de communication cost 12 developing 1 africa.*.