Perhaps you should try some spelling variations:
"economic depreciation" » "economic deprivation", "economic segregation", "economic decision"
"economic depression" » "economic recession", "economic deprivation", "economic decision"
"economic reception" » "economic recession", "economic exception", "economic perceptions"

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: (((("economic depression") OR ("economic depreciation"))) OR ("economic reception")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"economic depression\") OR (\"economic depreciation\"))) or (\"economic reception\"))".
• Removing quotes may allow a broader search: (((( economic depression ) OR ( economic depreciation ))) or ( economic reception )).
• Adding a wildcard symbol may retrieve word variants: (((("economic depression") OR ("economic depreciation"))) or ("economic reception"))*.