Perhaps you should try some spelling variations:
4.3 communication » 2.3 communication, 4.1 communication, 4 communication
developpement de » developpement des, developpement durable
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
rate rates » rates rates, dates rates, frame rates
de afrique » de l'afrique, en afrique, l afrique
rates 4.3 » rates 4.2, rates 4.5, rate 4.3

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation rate rates 4.3 communication costs _ developpement de afrique.*.