Perhaps you should try some spelling variations:
wages communications » states communications, mass communications, face communications
communications costs » communication costs, communications _
technology gaps » technology gap
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
gaps inflation » has inflation, grade inflation, rapid inflation
l afrique » en afrique
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: technology gaps inflation _ prices wages communications costs 4 developpement l afrique.*.