Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien mis » technologien mit, technologien des, technologien als
de communication » mobile communication, online communication
mis information » dis information, aids information, ids information
information 1.2 » information 1.5.2, information 2
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
1.2 debt » 4.2 debt, 10.8 debt, 1.2 der
cost 3.2 » cost 2.4
debt de » debt do, debt debt, debt gdp

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

• Adding a wildcard symbol may retrieve word variants: technologien mis information 1.2 debt de communication cost 3.2 developing _ areas.*.