Perhaps you should try some spelling variations:
get communication » et communication, debt communication, de communication
clean development » human development, urban development
relations 3.1 » relations 2.1, relations 1, relations _
technology 1 » technology _
1 relations » 3 relations, a relations, 1.2 relations
costs clean » costs clear
3.1 crisis » 2.1 crisis, 3 crisis, 11 crisis
crisis get » crisis great, crisis aged, crisis best
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 1 relations 3.1 crisis get communication costs clean development a aortic.*.