Perhaps you should try some spelling variations:
tests information » costs information, gets information, testing information
information wages » information age, information wants, information war
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technology tests » technology thesis, technology best, technology costs
developpement du » developpement de, developpement des, developpement et
4 developpement » de developpement, le developpement, et developpement
wages trade » wages race, wharves trade, states trade
du afrique » en afrique, l afrique, de l'afrique
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
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 tests information wages trade 6.2 communication costs 4 developpement du afrique.*.