Perhaps you should try some spelling variations:
concepts communication » contents communication, concepts communicated, context communication
clean development » human development, urban development
crisis concepts » crisis context, critical concepts, physics concepts
technology et » technology e, technology ecit, technology eimt
et relations » des relations, 3 relations, ethnic relations
relations 3 » relations _, relations a
costs clean » costs clear
3 crisis » 1 crisis, 19 crisis
a aortic » _ aortic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technology et relations 3 crisis concepts communication costs clean development a aortic.*.