Perhaps you should try some spelling variations:
educational authorities » education authorities, national authorities, educational activities
agricultural industries » agricultural inputs
rationale disparities » national disparities, regional disparities, educational disparities
industries great » industry great, industries japan, industries a
great die » great duet, great fire, great life

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

• Performing a fuzzy search may retrieve terms with similar spellings: agricultural industries great die ((rationale disparities) or (educational authorities)).~.
• If you are trying to use Boolean operators, they must be ALL CAPS: agricultural industries great die ((rationale disparities) OR (educational authorities))..
• Adding a wildcard symbol may retrieve word variants: agricultural industries great die ((rationale disparities) or (educational authorities)).*.