Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
developpement de » developpement des, developpement durable
technology 2.3 » technology 2.2, technology 2.1, technology 3.3
inflation wage » inflation rate, inflation target, inflation rates
2.3 inflation » 2.3.1 inflation, 5.33 inflation, 2 inflation
de afrique » de l'afrique, en afrique, l afrique
price 3.1 » prices 3.1, rice 3.1, price 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology 2.3 inflation wage price 3.1 communications costs _ developpement de afrique.*.