Perhaps you should try some spelling variations:
models communication » modern communication, modeling communication, modern communications
technologies 2 » technologies _, technologies 4
network credit » network media, network creation
3.1 developing » 3.3 developing, 3.2 developing, 4.1 developing
credit models » credit model, credit modern, credit levels
2 transport » 3 transport, 4 transport, 1 transport
costs 3.1 » costs 3.5, costs 4.1, costs 2.1

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 transport network credit models communication costs 3.1 developing _ areas.*.