Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
4.2 developpement » 4.2 development, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
technology does » technology debts, technology data, technology dlt
does innovation » does inflation, u.s innovation, process innovation
innovation code » innovation node, innovation model, innovation comes
note 6.2 » note 5.2, noten 6.4, note 2

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• Adding a wildcard symbol may retrieve word variants: technology does innovation code note 6.2 communication costs 4.2 developpement en afrique.*.