Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologies 2 » technologies _, technologies 4
15 developing » 1 developing, 5 developing, 10 developing
developing av » developing a, developing ai, developing amp
contents 3 » contents 1, contents _, contents i
av africa » v africa, iv africa, can africa
costs 15 » costs 5, costs 1, costs 15.3
3 de » 3 die, 3 der, 3 des

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 3 de communication costs 15 developing av africa.*.