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"
"actores politicos" » "factores criticos"
"factos politicos" » "actos politicos", "efectos politicos", "impactos politicos"

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