Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
2.1.1 information » 2.17.1 information, 2.2.1 information, 2.6.1 information
technology 2.1.1 » technology 3.1.1, technology 2.1.2, technology 2.1.3
developpement de » developpement des, developpement durable
information 12 » information 1.2, information 2, information 1
based pension » basic pension, based person, based dimension
system leur » system leap, system lens, system lfr
de afrique » de l'afrique, en afrique, l afrique
aes based » ses based, areas based, cases based
12 aes » 12 abs, 12 ars

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

• Adding a wildcard symbol may retrieve word variants: technology 2.1.1 information 12 aes based pension system leur developpement de afrique.*.