Perhaps you should try some spelling variations:
persona communications » personal communications, personal communication, regional communications
communications costs » communication costs, communications _
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 informations » 2.1 information, 9.2.1 informations, 3.1 information
developing areas » developing asia, developing east, developing a
informations b » informations und, informations sur, informations och
1 developing » 3 developing, 4 developing, 2 developing
areas areas » areas arenas, seas areas, areas access
de persona » de personal, de personas, die persona
costs 1 » costs _, costs 4, costs a
b de » b die, b der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 informations b de persona communications costs 1 developing areas areas.*.