Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
des informations » aids information
4 communication » 3 communication, 5.4 communication, de communication
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
cost 2.2 » costs 2.2, cost 2.4, cost 3.2
die 4 » die _, die e
a aes » a abs, a aus
_ aes » _ aus, _ abs, _ aws
und » fund

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien des informations und die 4 communication cost 2.2 developing ((a aes) OR (_ aes)).~".
• Adding a wildcard symbol may retrieve word variants: technologien des informations und die 4 communication cost 2.2 developing ((a aes) OR (_ aes)).*.