Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
et communication » et communicatione, get communication, debt communication
technologies 2 » technologies _, technologies 4
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
centers how » center how, centers hold, century how
cost 1.3 » cost 11.3, cost 1.2, cost 2.3
how et » how etf, how eu, how best

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 et communication cost 1.3 developing _ africa.*.