Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
based innovation » und innovation
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
innovation 3 » innovation 1, innovation 4
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
la afrique » l afrique, la fabrique, en afrique
3 prices » 2 prices, do prices, 3 prince
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 based innovation 3 prices 3.1 communications costs 4 developpement la afrique.*.