Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de communication
developpement en » developpement et, developpement des, developpement de
inflation rates » inflation rate
technology 6 » technology _, technology 1, technology 3
6 inflation » _ inflation, 2 inflation, d inflation
rates trade » states trade, rules trade, wages trade
trade 3.2 » trade 2.2, trade 2, trade 4.1

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

• Adding a wildcard symbol may retrieve word variants: technology 6 inflation rates trade 3.2 communication costs _ developpement en afrique.*.