Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
debt communication » de communication, et communication, get communication
communication cost » communication costs, communication costa, communications costs
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
12 developing » 1.2 developing, 2 developing, 1 developing
developing iv » developing av, developing ict, developing cil
content 3 » content _, content 1
iv africa » v africa, 1 africa, em africa
cost 12 » cost 1.2, cost 15, cost 3.2
3 debt » 83 debt, 4 debt, 2.3 debt

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information content 3 debt communication cost 12 developing iv africa.*.