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

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