Perhaps you should try some spelling variations:
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
information case » information based, information can, information costs
de communication » mobile communication, online communication
2.2 development » 3.2 development, 2.3 development, 4.2 development
case debt » rate debt, case des
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
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 aids information case debt de communication costs 2.2 development _ areas.*.