Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
technology than » technology tax, technology trap, technology change
inflation rates » inflation rate
4 developpement » de developpement, le developpement, et developpement
than inflation » has inflation, than information, huang inflation
rates spaces » places spaces, papers spaces, spaces spaces
des afrique » en afrique, de l'afrique
spaces 3.1 » spaces 1.1, spaces 2.1, 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 than inflation rates spaces 3.1 communication costs 4 developpement des afrique.*.