Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.3 communications » 3.1 communications, 3.3 communication, 2.3 communication
information gaps » information gap
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
a information » 2 information, 1 information
technology a » technology 1, technology 3, technology 4
de afrique » de l'afrique, en afrique, l afrique
gaps rice » laos rice
rice 3.3 » rice 3.1, rice 2.1, rice 4.1
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology a information gaps rice 3.3 communications costs 4 developpement de afrique.*.