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
4.1 integration » 3.3 integration, 4 integration, 3 integration
technology 4.1 » technology 3.1, technology 2.1, technology 1
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 4.1 integration a travel 2.2 communications costs del developpement en afrique.*.