Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
get communications » get communication, guest communications, et communication
formal contexts » formal context, formal contracts, local contexts
technologies 2 » technologies _, technologies 4
developing eu » developing e, developing eq, developing egg
contexts 3.1 » context 3.1, contexts 2.1, contents 3.1
e developing » 3 developing, 4 developing, 2 developing
eu africa » em africa, 1 africa, 11 africa
2 formal » _ formal, a formal, 3 formal
3.1 get » 3.1 git, 5.1 get, 3.1 gott
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 formal contexts 3.1 get communications costs e developing eu africa.*.