Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
developpement du » developpement de, developpement des, developpement et
technology than » technology tax, technology trap, technology change
than inflation » has inflation, than information, huang inflation
inflation coal » inflation can, inflation co, inflation tax
coal prices » oil prices, cereal prices
costs leur » costs clear
du afrique » en afrique, l afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: technology than inflation coal prices _ communication costs leur developpement du afrique.*.