Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technology effort » technology efforts, technology export, technology report
urban development » human development
effort training » export training, exports training, effort obtaining
a communication » la communication, data communication, data communications
development age » development stage, development a, development aid
1 political » 2 political, 4 political, 3 political
political a » political _, political 1, political 2
training 1 » training _, training 4, training a
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 effort training 1 political a communication cost urban development age aortic.*.