Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
developpement la » developpement de, developpement et, developpement du
a developpement » au developpement, de developpement, le developpement
technology 1 » technology _
section ix » section i, section ii, section iv
la afrique » l afrique, la fabrique, en afrique
1 section » 10 section, 19 section, 3 section
trade 2.1 » trade 2.2, trade 4.1, trade 2014
ix trade » sex trade, die trade, tax trade
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 ix trade 2.1 communication costs a developpement la afrique.*.