Perhaps you should try some spelling variations:
information context » information content, information contents, information centers
communication cost » communication costs, communication costa, communications costs
et communication » et communicatione, get communication, debt communication
technologies 2 » technologies _, technologies 4
developing use » developing e, developing ce, developing csi
15 developing » 1 developing, 5 developing, 10 developing
context 2.5 » context 2.1, context 2.3, context 2.2
cost 15 » cost 12, cost 5, cost 11.5
2.5 et » 2.5 ext4

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information context 2.5 et communication cost 15 developing use africa.*.