Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
emerging economics » emerging economies, emerging economines, emergine economies
formative context » normative context, normative content, formation contents
economics africa » economics china
based formative » based information
context do » context 3, context 1, context 2
do data » eo data, go data, geo data

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

• Adding a wildcard symbol may retrieve word variants: technology based formative context do data communications costs _ emerging economics africa.*.