Perhaps you should try some spelling variations:
technological system » technological systems, technological waste, technical system
facher communication » teacher communication, face communication, teachers communication
communication using » communications using, communication during, communicating using
system information » systems information, system formation, systeme d'information
3 developing » 3 development
developing a » developing _
der facher » der flachen, der flache, der bucher
using 3 » using 3d, using 3h, using _
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: technological system information _ der facher communication using 3 developing a areas.*.