Perhaps you should try some spelling variations:
duration targeting » modulation targeting, inflation targeting, subnational targeting
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
et developpement » de developpement, le developpement, test development
developpement l » developpement il, developpement la, developpement de
technology can » technology change, technology 1, technology 2.2
can duration » war duration, a duration, panel duration
targeting a » targeting _, targeting how
l afrique » en afrique
costs et » costs _, costs 4, costs a
a 4.1 » a 4.2, a 6.1

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

• Adding a wildcard symbol may retrieve word variants: technology can duration targeting a 4.1 communication costs et developpement l afrique.*.