Perhaps you should try some spelling variations:
technologien system » technological system, technology system, technological systems
communication using » communications using, communication during, communicating using
system information » systems information, system formation, systeme d'information
rates developing » crises developing
developing a » developing _
using rates » using gated, using rules, pumping rates
der mobile » der mobilen, der mobil, does mobile
a areas » 1 areas, 2 areas, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technologien system information _ der mobile communication using rates developing a areas.*.