Perhaps you should try some spelling variations:
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
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
a 3.1 » _ 3.1, a 3.2, a 3.3

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 3.1 communications _ a developpement l afrique.*.