Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
3.2 communication » 3 communication, 2.3 communication, de communication
development lid » development led, development li, development lie
technology 4.1 » technology 3.1, technology 2.1, technology 1
cs development » cns development, gas development, its development
4.1 inflation » 5.4.1 inflation, 2.3 inflation, 3.2 inflation
lid afrique » l afrique
case 3.2 » case 4.2, case 3.1, case 5.2
cost cs » cost lcc

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 inflation _ case 3.2 communication cost cs development lid afrique.*.