Perhaps you should try some spelling variations:
"Foundations of modern economicas spines" » "Foundations of modern economic spines", "Foundations of modelos economicos spines", "Foundations of modelo economico spines", "Foundations of modern economica spines", "Foundations of modern economia spines", "Foundations of modern economico spines"
"Foundations of poder economico series" » "Foundations of poder economica serie", "Foundations of poder economico spines", "Foundations of poder economico sociales", "Foundations of orden economico series"

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 poder economico series") OR ("Foundations of modern economicas spines"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Foundations of poder economico series\") OR (\"Foundations of modern economicas spines\"))".
• Removing quotes may allow a broader search: (( Foundations of poder economico series ) OR ( Foundations of modern economicas spines )).
• Adding a wildcard symbol may retrieve word variants: (("Foundations of poder economico series") OR ("Foundations of modern economicas spines"))*.