Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
technology gap » technology 1, technology 2.2, technology 3
development de » development d, development ds, developpement de
gap inflation » has inflation, grade inflation, rapid inflation
inflation das » inflation bias, inflation tax, inflation a
4 development » 2 development, 4 developing
das prices » gas prices, gas price, do prices
prices 2.1 » prices 2.4, prices 2.3, prices 3.1
de risques » des risques, de risque, les risques
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 das prices 2.1 communication costs 4 development de risques.*.