Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologies 2.1 » technologies _, technologies 4, technologies a
et communication » et communicatione, get communication, debt communication
2.1 information » 3.1 information
developing data » developing a, developing asia, developing east
4 developing » 3 developing
data africa » ratha african, intra africa, baga african
centers 3 » centers _, centers a, centers 3.3
cost 4 » cost _, cost 2.4
3 et » 13 et, 3 fet, 3 set

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information centers 3 et communication cost 4 developing data africa.*.