Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement il » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
technology 4ir » technology 4, technology 4.1, technology 4.2
4ir inflation » der inflation, die inflation, aid inflation
target year » targeted wear, target board, target wheat
il afrique » l afrique, en afrique
year 4.1 » year 4.3, year 4.4, year 8.1
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 4ir inflation target year 4.1 communication costs 4 developpement il afrique.*.