Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
2.2 communications » 2.2 communication, 4.2 communications, 3.2 communication
del developpement » de developpement, des developpements, le developpement
developpement en » developpement et, developpement des, developpement de
3.3 integration » 4.3 integration, 4.1 integration, 2 integration
technology 3.3 » technology 3.1, technology 3.2, technology 2.3
travel 2.2 » travel 7.2.2, travel 3.4, travel 3.7
costs del » costa del, costo del
a travel » _ travel, air travel

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

• Adding a wildcard symbol may retrieve word variants: technology 3.3 integration a travel 2.2 communications costs del developpement en afrique.*.