Perhaps you should try some spelling variations:
"economic deprivation" » "economic application", "economic modernization", "economic exploitation"
"economic depression" » "economic recession", "economic depreciation", "economic dimension"
"economic decision" » "economics decision", "economic recession", "economic design"

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