Perhaps you should try some spelling variations:
"neoclassical economics" » "neoclasica economics", "neoclasicas economics", "classical economics", "neoclassical economicas", "neoclassical economicos", "neoclassical economico"
"neoclassical economica" » "neoclasica economica", "neoclasicas economica", "classical economica"
"neoclassical economia" » "neoclasica economia", "neoclasicas economia", "classical economia"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("neoclassical economics") OR ((("neoclassical economica") OR ("neoclassical economia"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"neoclassical economics\") OR (((\"neoclassical economica\") OR (\"neoclassical economia\"))))".
• Removing quotes may allow a broader search: (( neoclassical economics ) OR ((( neoclassical economica ) OR ( neoclassical economia )))).
• Adding a wildcard symbol may retrieve word variants: (("neoclassical economics") OR ((("neoclassical economica") OR ("neoclassical economia"))))*.