Perhaps you should try some spelling variations:
12.4.4 communication » 12.2.4 communication, 10.2.4 communication, 10.4.3 communication
developpement en » developpement et, developpement des, developpement de
4 developpement » de developpement, le developpement, et developpement
technology log » technology lag, technology low, technology law
log inflation » low inflation, local inflation, lower inflation
inflation das » inflation bias, inflation tax, inflation a
prices 12.4.4 » prices 14.3.4, prices 2.3.4, prices 12.6.4.3
das prices » gas prices, gas price, do prices
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 log inflation das prices 12.4.4 communication costs 4 developpement en afrique.*.