Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
technology dlt » technology data, technology debts, technology 21st
cs development » cns development, gas development, its development
dlt inflation » der inflation, die inflation, d inflation
case 5.2 » case 4.2, case 3.2, case 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 dlt inflation _ case 5.2 communication cost cs development latin afrique.*.