Perhaps you should try some spelling variations:
through communication » through community, health communication, through competition
development centre » development centers, development center, development country
clean development » human development, urban development
technology rates » technology rate, technology creates, technology related
rates relations » ruthes relations, states relations, water relations
risk through » risks through, work through
relations a » relations _
costs clean » costs clear
centre case » century case, centred care, central case

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• Adding a wildcard symbol may retrieve word variants: technology rates relations a risk through communication costs clean development centre case.*.