Perhaps you should try some spelling variations:
"factores politicos" » "factores criticos", "actos politicos", "factores biologicos", "factos politicos", "ffactores criticos"
"ffactores criticos" » "factores criticos", "sectores criticos", "factores climaticos"
"factores clinicos" » "factores clinico", "factores criticos", "factores climaticos"
"actores politicos" » "actos politicos", "factores criticos"
"valores politicos" » "valores eticos"

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

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