Perhaps you should try some spelling variations:
"fvalores politicos" » "valores politicos", "factores politico"
"factores politicos" » "factores criticos", "actos politicos", "valores politicos", "ffactores criticos"
"ffactores criticos" » "factores criticos", "factores clinicos", "sectores criticos"
"actores politicos" » "factores criticos"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("fvalores politicos") or ((("factores politicos") OR ("ffactores criticos"))))) or ("actores politicos"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("fvalores politicos") OR ((("factores politicos") OR ("ffactores criticos"))))) OR ("actores politicos"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"fvalores politicos\") or (((\"factores politicos\") OR (\"ffactores criticos\"))))) or (\"actores politicos\"))*".
• Removing quotes may allow a broader search: (((( fvalores politicos ) or ((( factores politicos ) OR ( ffactores criticos ))))) or ( actores politicos ))*.