Perhaps you should try some spelling variations:
2.2.3 communication » 12.2.4 communication, 3.2 communication, 2.7 communication
loan development » loans development, clean development, town development
inflation rates » inflation rate
development law » development latin, development 1
rates reduce » gates reduce, taxes reduce, water reduce
reduce 2.2.3 » reduce pm2.5
costs loan » cost loans, costs down, costs land
law africa » can africa

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• Adding a wildcard symbol may retrieve word variants: technology _ inflation rates reduce 2.2.3 communication costs loan development law africa.*.