Perhaps you should try some spelling variations:
data communication » data communications
communication 7c » communication 7, communication 7.1, communication 7.5
development case » development china
technologie und » technologies 2.1
und information » fund information, road information, award information
7c policy » cpc policy, d.c policy, ftc policy
des data » das data, dhs data, dns data
3.2 des » 3.2 der, 3.2 das, 2.2 des
crec. » cresc., crc., cred.

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

• Adding a wildcard symbol may retrieve word variants: technologie und information 3.2 des data communication 7c policy development case crec.*.