Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
inflation rates » inflation rate
development law » development latin, development 1
technology gap » technology 1, technology 2.2, technology 3
gap inflation » has inflation, grade inflation, rapid inflation
4 development » 2 development, 4 developing
rates trade » states trade, rules trade, wages trade
law afrique » l afrique
trade 2.2 » trade 3.2, trade 4.1
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 gap inflation rates trade 2.2 communication costs 4 development law afrique.*.