Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
und informations » und information, und informationen, fund information
technologie und » technologies 2.1
3 communication » 4 communication, de communication, data communication
2.5 developing » 25.5 developing, 2.2 developing, 1.5 developing
developing a » developing _
cost 2.5 » costs 2.5, cost 2.4, cost 2.2
die 3 » die _, die 4, die e
a aes » _ aes, a abs, a aus

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

• Adding a wildcard symbol may retrieve word variants: technologie und informations und die 3 communication cost 2.5 developing a aes.*.