Perhaps you should try some spelling variations:
aged communication » based communication, ageist communication, aided communications
communication der » communication des, communication de, communication die
technology debts » technology debate, technology data, technology dlt
debts relations » des relations, les relations, its relations
relations 2.1 » relations 3.1, relations 1, relations _
crisis aged » crisis agenda, crisis changed, crisis after
2.1 crisis » 3.1 crisis, 2010 crisis, 2011 crisis
der social » der sozial, der soziale, war social

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

• Adding a wildcard symbol may retrieve word variants: technology debts relations 2.1 crisis aged communication der social development _ artic.*.