Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
inflation causes » inflation crises, inflation rates, inflation taxes
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
technology 1 » technology _
causes trade » causes de, causes case, assess trade
1 inflation » 10 inflation, 12 inflation, _ inflation
trade 4.1 » trade 2.2, trade 3.2
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 inflation causes trade 4.1 communication costs a developpement en afrique.*.