Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
det communication » debt communication, de communication, et communication
technologies 2 » technologies _, technologies 4
15 developing » 1 developing, 5 developing, 10 developing
contents i » contents 1, contents _, contents list
cost 15 » cost 12, cost 5, cost 11.5
i det » i der, i de, i den

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents i det communication cost 15 developing _ africa.*.