Perhaps you should try some spelling variations:
"factores politicos" » "actos politicos", "valores politicos", "factores biologicos", "factos politicos", "fvalores politicos"
"fvalores politicos" » "valores politicos", "factores politico"
"actores politicos" » "actos politicos", "valores politicos"
"factores critical" » "factores clinico", "factores clinicos", "factor critico"

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: (((((("factores politicos") OR ("fvalores politicos"))) or ("actores politicos"))) or ((("factores criticos") or ("factores critical"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("factores politicos") OR ("fvalores politicos"))) OR ("actores politicos"))) OR ((("factores criticos") OR ("factores critical")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"factores politicos\") OR (\"fvalores politicos\"))) or (\"actores politicos\"))) or (((\"factores criticos\") or (\"factores critical\"))))".
• Removing quotes may allow a broader search: (((((( factores politicos ) OR ( fvalores politicos ))) or ( actores politicos ))) or ((( factores criticos ) or ( factores critical )))).
• Adding a wildcard symbol may retrieve word variants: (((((("factores politicos") OR ("fvalores politicos"))) or ("actores politicos"))) or ((("factores criticos") or ("factores critical"))))*.

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