Perhaps you should try some spelling variations:
11.4.1 communication » 10.4.3 communication, 12.4.4 communication, 13.4.5 communication
developpement de » developpement des, developpement durable
technology log » technology lag, technology low, technology law
log inflation » low inflation, local inflation, lower inflation
inflation gas » inflation das, inflation bias, inflation tax
price 11.4.1 » prices 11.3.1, prices 11.2.3, price 10.1
gas price » gas prices

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

• Adding a wildcard symbol may retrieve word variants: technology log inflation gas price 11.4.1 communication costs _ developpement de l'afrique.*.