Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
set communication » et communication, get communication, debt communication
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
economics from » economics africa, economics france
4 development » 2 development, 4 developing
centers 3 » centers _, centers a, centers 3.3
cost 4 » cost _, cost 2.4
3 set » _ set, a set, 2 set

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 set communication cost 4 development economics from.*.