Perhaps you should try some spelling variations:
3.7 communication » 3.2 communication, 2.7 communication, 3.5 communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
section taxes » section three, sectors taxes
technology 1 » technology _
taxes trade » states trade, tax trade, wages trade
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 taxes trade 3.7 communication costs a developpement en afrique.*.