Perhaps you should try some spelling variations:
"Foundations of modelos economicos theories" » "Foundations of modelos economics theories", "Foundations of modelos economic theories", "Foundations of modelos economicos teoria"
"Foundations of poder economic theory" » "Foundations of poder economic history", "Foundations of poder economico theory", "Foundations of poder economia theory", "Foundations of power economic theory"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("Foundations of modelos economicos theories") OR ("Foundations of poder economic theory"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Foundations of modelos economicos theories\") OR (\"Foundations of poder economic theory\"))".
• Removing quotes may allow a broader search: (( Foundations of modelos economicos theories ) OR ( Foundations of poder economic theory )).
• Adding a wildcard symbol may retrieve word variants: (("Foundations of modelos economicos theories") OR ("Foundations of poder economic theory"))*.