Perhaps you should try some spelling variations:
communication costo » communication costs, communication costa, communications costs
3.2 communication » 3 communication, 2.3 communication, de communication
del developpement » de developpement, des developpements, le developpement
developpement en » developpement et, developpement des, developpement de
die integration » trade integration
technology die » technologie die, technology does, technology 4ir
integration 4 » integration 3
trade 3.2 » trade 2.2, trade 2, trade 4.1
costo del » costa del, cose del, costo e
4 trade » 1 trade

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

• Adding a wildcard symbol may retrieve word variants: technology die integration 4 trade 3.2 communication costo del developpement en afrique.*.