Perhaps you should try some spelling variations:
developing economies » development economics, developing countries, emerging economies
communication costa » communication costs, communications costs, communication cote
information centers » information contents, information officers
technologien als » technologien des, technologien fur, technologien und
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
economies from » economics from, economies f430, economies f120
4 developing » 3 developing
centers 3.3 » centers 3.8, centers 4.3, century 3.3
costa 4 » cost 4, costa e, costa 3
3.3 de » 3.3 die, 3.3 der, 3.3 dem

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

• Adding a wildcard symbol may retrieve word variants: technologien als information centers 3.3 de communication costa 4 developing economies from.*.