Perhaps you should try some spelling variations:
"factores politicos" » "factores criticos", "actos politicos", "valores politicos", "ffactores criticos"
"ffactores criticos" » "factores criticos", "factores clinicos", "lectores criticos"
"sectores criticos" » "lectores criticos", "factores criticos", "errores criticos"
"actores politicos" » "factores criticos"
"seres criticos" » "saberes criticos", "temas criticos", "retos criticos"

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