Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
inflation wages » inflation rates, inflation taxes, inflation targets
technology log » technology lag, technology low, technology law
log inflation » low inflation, local inflation, lower inflation
envelopment l » development li, development 1
wages case » ages case, wages close, cases case
costs data » cost data
l afrique » en afrique
case 2.2 » cases 2.2, case 4.2, case 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology log inflation wages case 2.2 communication costs data envelopment l afrique.*.