Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
communication 1.3 » communication 3.3, communication 4.3, communication 1.1
migration papers » migration patterns, migration dangers, migration pattern
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
technology 2 » technology _, technology 1, technology 3
2 migration » der migration
papers 6.2 » papers 6.1, papers 6.3, papers 7.2
1.3 et » 1.3 el, 1.3 ea, 1.3 ed

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

• Adding a wildcard symbol may retrieve word variants: technology 2 migration papers papers 6.2 communication 1.3 et developpement en afrique.*.