Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
past communication » post communication, put communication, master communication
urban development » human development
relation 10.2 » relation 1.2.2, relations 10.1, relations 10.3
technology 3 » technology _, technology 1, technology 4
10.2 crisis » 13.2 crisis, 15.2 crisis, 1.1 crisis
crisis past » crisis part, crisis east, crisis post
3 relation » 3 relations, _ relation, 5 relation
cost urban » most urban, worst urban, bust urban

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

• Adding a wildcard symbol may retrieve word variants: technology 3 relation 10.2 crisis past communication cost urban development _ artic.*.