Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
can communications » chad communications, iran communications, oman communications
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
information 2 » information 3
costs leur » costs clear
areas can » areas case, areas cash, areas coal
2 areas » 1 areas, 2 areal, 4 areas

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

• Adding a wildcard symbol may retrieve word variants: technology 4.2 information 2 areas can communications costs leur developpement en afrique.*.