Perhaps you should try some spelling variations:
rural communications » oral communication, rural telecommunications, cultural communications
communications costs » communication costs, communications _
development citizen » development caribbean
urban development » human development
integration 4.1 » integration 2.1, integration 3.1, integration 4.2
costs urban » cost urban, across urban, crisis urban
does rural » homes rural
citizen i » citizen _, citizen a, citizen 1
4.1 does » 3.1 does, 4.7.1 does, 4.1 die

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

• Adding a wildcard symbol may retrieve word variants: technologies _ integration 4.1 does rural communications costs urban development citizen i.*.