Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
urban development » human development
development eco » development second, development east, development menu
technologies a » technologies _, technologies 4, technologies 2
informatik und » information und, informations und, informationen und
a informatik » a information, der informatik, 2.4 informatik
costs urban » cost urban, across urban, crisis urban
eco afrique » en afrique
agent data » patent data, event data, age data
und agent » und agenten, und agency, und agenda

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

• Adding a wildcard symbol may retrieve word variants: technologies a informatik und agent data communications costs urban development eco afrique.*.