Perhaps you should try some spelling variations:
3.7 communication » 3.2 communication, 2.7 communication, 3.5 communication
a developpement » au developpement, de developpement, le developpement
section states » section state, nation states, reaction state
technology 1 » technology _
states trade » states state, states three
des afrique » en afrique, de l'afrique
1 section » 10 section, 19 section, 3 section
trade 3.7 » trade 3.2, trade 3.1, trade 3.8
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 1 section states trade 3.7 communication costs a developpement des afrique.*.