Perhaps you should try some spelling variations:
oral communication » personal communication
technologies 1 » technologies _, technologies 4, technologies 2
contents label » contents fase, contents local
2.1 developing » 2.2 developing, 2.3 developing, 2.6 developing
developing de » developing e, developing ce, developing deep
label oral » label global
costs 2.1 » costs 2.3, costs 4.1, costs 2.2
de africa » does africa, de america, use africa

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information contents label oral communication costs 2.1 developing de africa.*.