Perhaps you should try some spelling variations:
communication costa » communication costs, communications costs, communication cote
integration wages » integration wage, integration wege, integration wie
technology trade » technology trends, technology transfer, technology transfers
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
e developpement » de developpement, le developpement, et developpement
wages race » wages trade, wage rate, wages case
race 3 » race 39, race _, race 4

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration wages race 3 communication costa e developpement en afrique.*.