Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
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 developing » 3 development
1.2 debt » 4.2 debt, 10.8 debt, 1.2 der
debt de » debt do, debt debt, debt gdp
case 3 » case 1, case 2

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 case 3 developing _ areas.*.