Perhaps you should try some spelling variations:
"political economic" » "political economy", "political ecology", "ecological economics"
"policy economic" » "policy economics"
"policy macroeconomic" » "policy macroeconomics"

Try widening your search to All Fields.

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