Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
duration targeting » modulation targeting, inflation targeting, subnational targeting
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
targeting ago » targeting a, targeting als, targeting fao
technology 1 » technology _
1 duration » _ duration, a duration, i duration
l afrique » en afrique
ago 3.1 » go 3.1, ago 3.2.1, apco 3.1
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 1 duration targeting ago 3.1 communications costs a developpement l afrique.*.