Perhaps you should try some spelling variations:
external communication » internal communication, internal communications, personal communication
technological 3.5 » technological _, technological art, technological gap
3.5 institutions » 2.5 institutions, 3.1 institutions, 3.2 institutions
4 developing » 3 developing
developing a » developing _
3 external » 4 external, 5 external
a afrique » l afrique, en afrique
africa 3 » africa _, africa a, africa 1
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: technological 3.5 institutions africa 3 external communication costs 4 developing a afrique.*.