Perhaps you should try some spelling variations:
2.3.1.1 communication » 2.2.5.4 communication, 3.4.1 communication, 6.2.4.1 communication
technology gap » technology 1, technology 2.2, technology 3
gap inflation » has inflation, grade inflation, rapid inflation
krieg 2.3.1.1 » krieg 2.3.1.2, kriege 2.3.1.3, primer 2.3.1.1
4 development » 2 development, 4 developing
inflation b » inflation _, inflation a, inflation 1
b krieg » 6 krieg, 4 krieg, 8 krieg
costs 4 » costs _, costs a, costs 4.2
fabrics. » fabric.

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology gap inflation b krieg 2.3.1.1 communication costs 4 development latin fabrics.*.