Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
developpement en » developpement et, developpement des, developpement de
technologies 4 » technologies _
4 information » 2 information, 1 information
policy order » policy under, policy other, policy over
order 1.1 » border 1.1, order 11.1, order 12.1

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information policy order 1.1 communication _ leur developpement en afrique.*.