Perhaps you should try some spelling variations:
vote communication » voice communication, ante communication, remote communication
technologies 2.1 » technologies _, technologies 4, technologies a
2.1 information » 3.1 information
information can » information case, information 1, information 1.2
4 developing » 3 developing
die vote » die vogtei, die vater, does vote
can die » man die, can de, can drive
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information can die vote communication costs 4 developing _ areas.*.