Perhaps you should try some spelling variations:
true communication » truth communication, time communication, stroke communication
developpement en » developpement et, developpement des, developpement de
2.1 information » 3.1 information
information 1.2 » information 1.5.2, information 2
4 developpement » de developpement, le developpement, et developpement
technology 2.1 » technology 2.2, technology 3.1, technology 1
states true » states three, states trade, states traded
1.2 states » 1.2 status, 1.2 state, 4.2 states
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 2.1 information 1.2 states true communication costs 4 developpement en afrique.*.