Perhaps you should try some spelling variations:
migration dangers » migration managers, migration drivers, migration changes
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
communication 1.3 » communication 3.3, communication 4.3, communication 1.1
den developpement » de developpement, en developpement, des developpements
developpement en » developpement et, developpement des, developpement de
technology use » technology 1, technology 2.2, technology 3
dangers spaces » papers spaces
use migration » die migration, pre migration, re migration
spaces 2.7 » spaces 2.1, spaces 2.2, spaces 2.3
1.3 den » 1.3 der, 2.3 den, 1.3 deep

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

• Adding a wildcard symbol may retrieve word variants: technology use migration dangers spaces 2.7 communication 1.3 den developpement en afrique.*.