Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
inflation target » inflation targeting, inflation rate, inflation rates
31 communication » 3.1 communication, 3 communication, 1 communication
developpement de » developpement des, developpement durable
technology 6 » technology _, technology 1, technology 3
6 inflation » _ inflation, 2 inflation, d inflation
target file » target field, target while, target fish
de afrique » de l'afrique, en afrique, l afrique
file 31 » file 1, file 11, file 21

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

• Adding a wildcard symbol may retrieve word variants: technology 6 inflation target file 31 communication _ leur developpement de afrique.*.