Perhaps you should try some spelling variations:
21st communication » post communication, 2.3 communication, csr communication
communication cost » communication costs, communication costa, communications costs
urban development » human development
development age » development stage, development a, development aid
technology soc » technology shock, technology some, technology set
relation based » relations based, creation based, reaction based
based politics » based policies, flawed politics, nested politics
soc relation » shot relation, soc correlation, hoc regulation
cost urban » most urban, worst urban, bust urban
age aortic » acute aortic, after aortic

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

• Adding a wildcard symbol may retrieve word variants: technology soc relation based politics 21st communication cost urban development age aortic.*.