Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
developpement en » developpement et, developpement des, developpement de
inflation wages » inflation rates, inflation taxes, inflation targets
4 developpement » de developpement, le developpement, et developpement
technology u.s » technology uses, technology 2.2, technology use
u.s inflation » und inflation, 2.3 inflation, 3.2 inflation
wages race » wages trade, wage rate, wages case
race 3.1 » rice 3.1, race 3.7, space 3.1
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 u.s inflation wages race 3.1 communications costs 4 developpement en afrique.*.