Perhaps you should try some spelling variations:
information survey » information sources, information source, information series
communication can » communication canada, communication china, communication 3
de communication » mobile communication, online communication
planning africa » banking africa
technologies 2 » technologies _, technologies 4
can human » than human, non human, von human
survey 2 » survey _, survey 3, survey 1
2 de » 2 die, 2 der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information survey 2 de communication can human development planning africa.*.