Perhaps you should try some spelling variations:
3.4.2 communication » 3.3.2 communication, 3.4.1 communication, 3.4.4 communication
technological open » technological model, technological power, technological options
amy developpement » au developpement, de developpement, le developpement
innovation rates » innovation rate, innovation notes, innovation race
developpement l » developpement il, developpement la, developpement de
costs amy » costs a
l afrique » en afrique
rates 1 » rates 19, rates _, rates a
1 3.4.2 » 1 3.3.2, 1 3.2.2, 1 3.5.2

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• Adding a wildcard symbol may retrieve word variants: technological open innovation rates 1 3.4.2 communication costs amy developpement l afrique.*.