Perhaps you should try some spelling variations:
technological system » technological systems, technological waste, technical system
communication using » communications using, communication during, communicating using
system information » systems information, system formation, systeme d'information
face communication » voice communication, de communication, time communication
a developing » a development
developing 4 » developing _, developing a, developing e
der face » der farce, der fake, der facher
using a » using _
4 areas » 1 areas, 2 areas, 4 areal

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

• Adding a wildcard symbol may retrieve word variants: technological system information _ der face communication using a developing 4 areas.*.