Perhaps you should try some spelling variations:
developing economies » development economics, developing countries, emerging economies
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
et communication » et communicatione, get communication, debt communication
economies from » economics from, economies f430, economies f120
4 developing » 3 developing
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: technologien aids information centers 3 et communication cost 4 developing economies from.*.