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
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
targeting apco » targeting abca1, targeting alpha, targeting amino
technology 1 » technology _
1 duration » _ duration, a duration, i duration
apco 3.1 » apco 3.4.1, ago 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 apco 3.1 communications costs a developpement en afrique.*.