Perhaps you should try some spelling variations:
data communication » data communications
communication 1.1 » communication 4.1, communication 7.1, communication 1.3
clean development » human development, urban development
information oder » information der, information model, information code
1.1 clean » 1.4.1 clean, 12.2 clean, 2.2 clean
oder nur » oder der
nur data » our data, nmr data, your data

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information oder nur data communication 1.1 clean development 1 africa.*.