Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
technology grade » technology trade, technology guides, technology gender
developpement en » developpement et, developpement des, developpement de
grade inflation » price inflation, trade information
4 developpement » de developpement, le developpement, et developpement
inflation base » inflation rate, inflation bias, inflation das
base price » sale price
price 2.2 » price 2.3, price 2.4, price 3.2
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology grade inflation base price 2.2 communication costs 4 developpement en afrique.*.