Perhaps you should try some spelling variations:
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
information rates » information states, information ratio, information rules
data information » data innovation, a information, database information
technology data » technology dlt, technology debate, technology debts
development law » development latin, development 1
rates cases » states cases, rates rates, rates cape
law afrique » l afrique
cases 4.2 » case 4.2, cases 2.2, cases 4.1

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• Adding a wildcard symbol may retrieve word variants: technology data information rates cases 4.2 communications _ social development law afrique.*.