Perhaps you should try some spelling variations:
data communication » data communications
urban development » human development
technology des » technology does, technology debts, technology nodes
des relations » les relations, its relations, et relations
relations 5.1 » relations 2.1, relations 3.1, relations 1
costs urban » cost urban, across urban, crisis urban
china nine » china non
5.1 own » 5.1 towns

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

• Adding a wildcard symbol may retrieve word variants: technology des relations 5.1 own data communication costs urban development china nine.*.