Perhaps you should try some spelling variations:
"factores politicos" » "actores politicos", "factores biologicos", "factores climaticos"
"valores politicos" » "actores politicos", "valores eticos"
"factores criticos" » "factores clinicos", "factor criticos", "factores clinicoss"
"factores critico" » "factores clinico", "factor critico", "factores clinicos"
"actos politicos" » "actores politicos", "aspectos politicos", "efectos 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 ("actos politicos"))) or ("valores politicos"))) or ((("factores criticos") OR ("factores critico"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("factores politicos") OR ("actos politicos"))) OR ("valores politicos"))) OR ((("factores criticos") OR ("factores critico")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"factores politicos\") or (\"actos politicos\"))) or (\"valores politicos\"))) or (((\"factores criticos\") OR (\"factores critico\"))))".
• Removing quotes may allow a broader search: (((((( factores politicos ) or ( actos politicos ))) or ( valores politicos ))) or ((( factores criticos ) OR ( factores critico )))).
• Adding a wildcard symbol may retrieve word variants: (((((("factores politicos") or ("actos politicos"))) or ("valores politicos"))) or ((("factores criticos") OR ("factores critico"))))*.

One or more facet filters have been applied to this search. If you remove filters, you may retrieve more results. Remove all filters from this search.