Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
open development » clean development, driven development, human development
inflation rates » inflation rate
technology der » technology does, technology 4ir, technology dlt
der inflation » core inflation, _ inflation, low inflation
rates rate » rates rates, dates rates, rates raise
costs open » cost open, costs over
rate 5.2 » rates 5.2, rate 5.4, rate 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology der inflation rates rate 5.2 communication costs open development latin afrique.*.