Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
developpement de » developpement des, developpement durable
inflation tax » inflation rate, inflation _, inflation target
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
de afrique » de l'afrique, en afrique, l afrique
tax price » tax crime, fox price
price 4.2 » prices 4.2, price 4.4, price 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation tax price 4.2 communication a leur developpement de afrique.*.