Perhaps you should try some spelling variations:
"international poppy economy series" » "international policy economy series", "international ports economy series", "international power economy series", "international poppy economics series"
"international prices autonomy series" » "international driven autonomy series", "international provider autonomy series", "international private autonomy series", "international prices astronomy series", "international prices autonomy states", "international prices autonomy survey"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international poppy economy series") or ("international prices autonomy series"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("international poppy economy series") OR ("international prices autonomy series")).
• Removing quotes may allow a broader search: (( international poppy economy series ) or ( international prices autonomy series )).
• Adding a wildcard symbol may retrieve word variants: (("international poppy economy series") or ("international prices autonomy series"))*.