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
la developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
technology age » technology usage, technology wages, technology a
age migration » large migration, male migration, safe migration
papers 6.2 » papers 6.1, papers 6.3, papers 7.2
1.3 la » 2.3 la, 1.3 le

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

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