Perhaps you should try some spelling variations:
put communication » post communication, et communication, get communication
clean development » human development, urban development
technology debts » technology debate, technology data, technology dlt
debts relations » des relations, les relations, its relations
relations 2011 » relations 2.1, relations 1.11, relations 10.1
2011 crisis » 2010 crisis, 11 crisis, 2.1 crisis
costs clean » costs clear
crisis put » crisis pt, crisis part, crisis past
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 debts relations 2011 crisis put communication costs clean development a aortic.*.