Perhaps you should try some spelling variations:
personal communication » interpersonal communication
technologie 1 » technologies 1, technologien 1, technologie c
developing de » developing e, developing ce, developing deep
contents one » contents open, contents je, contents cover
one personal » some personal, more personal, one person
4 developing » 3 developing
de africa » does africa, de america, use africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologie 1 information contents one personal communication costs 4 developing de africa.*.