Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
based communications » based communication, speed communications, aided communications
preparation costs » generation costs, preparation cycle
technologies de » technologies _, technologies 4, technologies 2
de preparation » bed preparation, one preparation, ore preparation
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
developing a » developing _
costs ecc » costs ch
ecc based » ecg based, epc based, echr based
costs 2.2 » costs 4.2, costs 2.3, cost 2.2
a area » a areas, 1 area, 3 area

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

• Adding a wildcard symbol may retrieve word variants: technologies de preparation costs ecc based communications costs 2.2 developing a area.*.