Perhaps you should try some spelling variations:
debt communication » de communication, et communication, get communication
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
developing use » developing e, developing ce, developing csi
15 developing » 1 developing, 5 developing, 10 developing
contents 4 » contents 1, contents _, contents i
cost 15 » cost 12, cost 5, cost 11.5
4 debt » 3 debt, 4 debats

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

• Adding a wildcard symbol may retrieve word variants: technologien als information contents 4 debt communication cost 15 developing use africa.*.