Perhaps you should try some spelling variations:
development crises » development crisis, development cross, development cases
de communication » mobile communication, online communication
communication 2 » communication _, communication a, communication 3
technologies 2 » technologies _, technologies 4
information 2 » information 3
crises africa » prices africa, cases africa, crises asia
2 human » 3 human
den de » den die, den drei, orden de
2 den » _ den, 2 der, 2 des

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

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