Perhaps you should try some spelling variations:
scale communication » scales communication, space communication, style communication
clean development » human development, urban development
technology 5 » technology _, technology 1, technology 3
crisis scale » crisis state, crisis social, crisis fiscal
costs clean » costs clear
5 relation » _ relation, 5 regulation, la relation
relation a » relation _, relational _, relation zur
a crisis » 19 crisis

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

• Adding a wildcard symbol may retrieve word variants: technology 5 relation a crisis scale communication costs clean development _ artic.*.