Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
urban development » human development
et communication » et communicatione, get communication, debt communication
development em » development eco, development 1, development 11
taxation rate » taxation rates, taxation base, taxation data
rate after » trade after, state after, water after
cost urban » most urban, worst urban, bust urban
em africa » 1 africa
after et » after e, after eu, after art

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

• Adding a wildcard symbol may retrieve word variants: technology _ taxation rate after et communication cost urban development em africa.*.