Perhaps you should try some spelling variations:
local development » social development, global development, rural development
3.2 communication » 3 communication, 2.3 communication, de communication
technology 5.33 » technology 5.3, technology 5.3.1, technology 2.3
inflation rates » inflation rate
development law » development latin, development 1
5.33 inflation » 3.3.3 inflation, 5.4.3 inflation, 2.3 inflation
law afrique » l afrique
rates file » rates figure
file 3.2 » cile 3.2, file 32, file 3.2.3

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• Adding a wildcard symbol may retrieve word variants: technology 5.33 inflation rates file 3.2 communication costs local development law afrique.*.