Perhaps you should try some spelling variations:
technology 2.3.1 » technology 6.3.1, technology 2.1.1, technology 2.3.2
developpement et » developpement des, developpement de, development east
2.3.1 inflation » 2.2.4 inflation, 2.3 inflation, 3.3.3 inflation
a developpement » au developpement, de developpement, le developpement
index prices » index price, index places, index provinces
et afrique » en afrique, l afrique
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 2.3.1 inflation index prices _ communication costs a developpement et afrique.*.