Perhaps you should try some spelling variations:
"pensamiento politico colombiano" » "pensamiento politicos colombiano" (Expand Search), "pensamiento politica colombiano" (Expand Search), "pensamiento politicas colombiano" (Expand Search), "pensamiento politico colombiana" (Expand Search), "pensamiento politico colombia" (Expand Search)
"pensamiento politicass colombiano" » "pensamiento politicass colombiana" (Expand Search), "pensamiento politicass colombia" (Expand Search), "pensamiento politicas colombiano" (Expand Search), "pensamiento politica colombiano" (Expand Search), "pensamiento politicos colombiano" (Expand Search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("pensamiento politico colombiano") OR ("pensamiento politicass colombiano"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"pensamiento politico colombiano\") OR (\"pensamiento politicass colombiano\"))".
• Removing quotes may allow a broader search: (( pensamiento politico colombiano ) OR ( pensamiento politicass colombiano )).
• Adding a wildcard symbol may retrieve word variants: (("pensamiento politico colombiano") OR ("pensamiento politicass colombiano"))*.