Perhaps you should try some spelling variations:
communication barriers » communication series, communication disorders
3.2 communication » 3 communication, 2.3 communication, de communication
inflation gerold » inflation levels, inflation across, inflation der
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
gerold prices » gold prices, world prices, gold price
technology 2 » technology _, technology 1, technology 3
2 inflation » 12 inflation, _ inflation, 6 inflation
barriers au » barriers a, barriers aa, barriers law
prices 3.2 » price 3.2, prices 3.1, prices 4.2
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 2 inflation gerold prices 3.2 communication barriers au developpement de afrique.*.