Perhaps you should try some spelling variations:
3.4 communication » 5.4 communication, 3.2 communication, 3.5 communication
urban development » human development
technologies der » technologies de, technologie der, technologies under
der information » insider information, sector information, labor information
information und » informations und
development en » developpement en, development menu, development eco
costs urban » cost urban, across urban, crisis urban
und agent » und agenten, und agency, und agenda
agent 3.4 » agent 5.4, agenten 3.4, agenda 3.4

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

• Adding a wildcard symbol may retrieve word variants: technologies der information und agent 3.4 communication costs urban development en afrique.*.