Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
developpement en » developpement et, developpement des, developpement de
technology 2.2 » technology _, technology 1, technology 3
2.2 inflation » 2.3 inflation, 3.2 inflation, 2.2.4 inflation
index prices » index price, index places, index provinces
prices 3.5 » prices 3.1, prices 3.2, prices 7.5
costs des » costs fees

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 inflation index prices 3.5 communication costs des developpement en afrique.*.