Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication cost » communication costs, communication costa, communications costs
development center » development case
urban development » human development
technology dog » technology does, technology dlt, technology data
dog relations » des relations, cost relations, role relations
role personal » roles personal, some personal, more personal
center based » gender based, cluster based, weather based
relations a » relations _
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 dog relations a role personal communication cost urban development center based.*.