Perhaps you should try some spelling variations:
line developpement » le developpement, line development, mine development
technology change » technological change, technological changes
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
change section » change action, change detection, change education
section data » sectional data
des afrique » en afrique, de l'afrique
data space » data spaces, data sparse, data scarce
costs line » costs linked, costs land, costs longer
space 2.2 » space 2.1, space 3.2, space 3.3

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

• Adding a wildcard symbol may retrieve word variants: technology change section data space 2.2 communication costs line developpement des afrique.*.