Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
information wages » information age, information wants, information war
3.2 communication » 3 communication, 2.3 communication, de communication
technology trade » technology trends, technology transfer, technology transfers
le developpement » de developpement, sme development
developpement du » developpement de, developpement des, developpement et
wages race » wages trade, wage rate, wages case
du afrique » en afrique, l afrique, de l'afrique
race 3.2 » race 3.7, race 4.2, rice 3.2
costs le » costs _, costs 4, costs a

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology trade information wages race 3.2 communication costs le developpement du afrique.*.