Perhaps you should try some spelling variations:
2.5 communication » 2.3 communication, 2.7 communication, 3.5 communication
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
targeting gap » targeting a, targeting fao, targeting tax
technology 4 » technology _, technology 1, technology 3
4 inflation » _ inflation, 2 inflation, 6 inflation
costs au » costs a, costs amy, costs _
gap 2.5 » gap 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology 4 inflation targeting gap 2.5 communication costs au developpement de l'afrique.*.