Perhaps you should try some spelling variations:
communications model » communications models, communication model, communicating model
urban development » human development
informatik der » information der, information oder, informatik und
development en » developpement en, development menu, development eco
model urban » modern urban, modeling urban
cdas data » das data, cdis data, codes data
der cdas » der cas, der das, der codes

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

• Adding a wildcard symbol may retrieve word variants: technologies _ informatik der cdas data communications model urban development en afrique.*.