Perhaps you should try some spelling variations:
"international policy economy series" » "international poverty economy series", "international prices economy series", "national policy economy series", "international policy economic series", "international polish economy series", "international politics economy series", "international policy economics series"
"international economics economics theories" » "international economics economic theories", "international economics econometric theories", "international ecological economics theories", "international economics economics series", "international economics economics theory"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international economics economics theories") OR ("international policy economy series"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international economics economics theories\") OR (\"international policy economy series\"))*".
• Removing quotes may allow a broader search: (( international economics economics theories ) OR ( international policy economy series ))*.