Perhaps you should try some spelling variations:
technologies other » technologies offer, technology other, technologies authors
5.4 communication » de communication, data communication
urban development » human development
other informal » older informal, other internal, other information
development en » developpement en, development menu, development eco
informal der » informal order, informal peer, informal lender
costs urban » cost urban, across urban, crisis urban
der agent » der agency, der agenda, d'etre agent
agent 5.4 » agent 3.4, agenten 5.4, agent 5.10

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

• Adding a wildcard symbol may retrieve word variants: technologies other informal der agent 5.4 communication costs urban development en afrique.*.