Perhaps you should try some spelling variations:
6.3 communication » 26.3 communication, 2.3 communication, 4.3 communication
inflation target » inflation targeting, inflation rate, inflation rates
from inflation » food inflation, from isolation, from information
target files » target file, target sites, target prices
4 developing » 3 developing
files 6.3 » files 4.3, filter 6.3, files 2.6
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 from inflation target files 6.3 communication costs 4 developing _ afrique.*.