Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
technology gap » technology 1, technology 2.2, technology 3
inflation ages » inflation rates, inflation taxes, inflation als
gap inflation » has inflation, grade inflation, rapid inflation
development l » development li, development 1, development law
ages case » wages case, age case, cases case
l afrique » en afrique
case 4.2 » case 4.1, case 2

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

• Adding a wildcard symbol may retrieve word variants: technology gap inflation ages case 4.2 communications costs _ development l afrique.*.