Perhaps you should try some spelling variations:
educational disparities » educational authorities, educational distribution
national authorities » local authorities
cultural industry » culture industry, subcultural industry, cultural industries
great 2 » great _, great 5.2
great 3 » great _, great 356

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

• If you are trying to use Boolean operators, they must be ALL CAPS: cultural industry ((great 2) OR (great 3)) ((educational disparities) OR (national authorities)).~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cultural industry ((great 2) OR (great 3)) ((educational disparities) or (national authorities)).~".
• Adding a wildcard symbol may retrieve word variants: cultural industry ((great 2) OR (great 3)) ((educational disparities) or (national authorities)).*.