Perhaps you should try some spelling variations:
urban development » human development
through operation » through cooperation, through operational, through observation
development case » development china
operation costs » operational costs, operating costs, generation costs
technology law » technology 1, technology 2.2, technology 3
law regulation » law regulations, laws regulations, flow regulation
regulation 3.4 » regulation 4, regulation 6.3, regulation _
income through » incomes through, come through, came through
costs urban » cost urban, across urban, crisis urban
3.4 income » 3.3 income, 3.7 income, 3.4.1 income
case c » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technology law regulation 3.4 income through operation costs urban development case c.*.