Perhaps you should try some spelling variations:
through communication » through community, health communication, through competition
communication cost » communication costs, communication costa, communications costs
urban development » human development
development use » development using, development under, development unit
trade through » peace through, space through, care through
relation 4.5 » relation 4.3, relations 4.3, relation 5.3
cost urban » most urban, worst urban, bust urban
4.5 trade » 3.5 trade, 4.5 trauer, 4.5 travel

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

• Adding a wildcard symbol may retrieve word variants: technology _ relation 4.5 trade through communication cost urban development use case.*.