Perhaps you should try some spelling variations:
13.3.10 communication » 13.3.9 communication, 11.4.1 communication, 13.4.5 communication
developpement et » developpement des, developpement de, development east
primary 13.3.10 » primary 11.1.1
4 developpement » de developpement, le developpement, et developpement
technology 2.3 » technology 2.2, technology 2.1, technology 3.3
2.3 inflation » 2.3.1 inflation, 5.33 inflation, 2 inflation
inflation pt » inflation _, inflation a, inflation 1
pt primary » post primary, pre primary, net primary
et afrique » en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2.3 inflation pt primary 13.3.10 communication costs 4 developpement et afrique.*.