Perhaps you should try some spelling variations:
communication model » communication media
data communication » data communications
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
gas data » gis data, hbs data
der gas » der ga, der gap, der gaste

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

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