Perhaps you should try some spelling variations:
21st communication » post communication, 2.3 communication, csr communication
communication cost » communication costs, communication costa, communications costs
development center » development case
urban development » human development
technology 2.2 » technology _, technology 1, technology 3
based politics » based policies, flawed politics, nested politics
action based » location based, vision based
2.2 action » 3.2 actions, 2.2 active, 2.2 adoption
cost urban » most urban, worst urban, bust urban
center car » center can, center case, center harc

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 action based politics 21st communication cost urban development center car.*.