Perhaps you should try some spelling variations:
change information » chandos information, trade information
technology change » technological change, technological changes
information ratio » information nation, information matrix, information section
3.2 communication » 3 communication, 2.3 communication, de communication
amy developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
ratio age » ratio a, ratio acr
costs amy » costs a
l afrique » en afrique
age 3.2 » lage 3.2, age 1.2, age 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology change information ratio age 3.2 communication costs amy developpement l afrique.*.