Perhaps you should try some spelling variations:
communication system » communication systems, telecommunication system, communication series
der transformation » die transformation, zur transformation, energy transformation
data communication » data communications
technologie der » technologie de, technologien des, technologies de
china africa » cpia africa, china asia
de data » e data, wide data, de datos

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologie der transformation _ de data communication system a development china africa.~.
• Adding a wildcard symbol may retrieve word variants: technologie der transformation _ de data communication system a development china africa.*.