Perhaps you should try some spelling variations:
communication costa » communication costs, communications costs, communication cote
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
e developpement » de developpement, le developpement, et developpement
wages race » wages trade, wage rate, wages case
du afrique » en afrique, l afrique, de l'afrique
race 6.2 » grace 6.2, race 4.2, race 6.4

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 race 6.2 communication costa e developpement du afrique.*.