Perhaps you should try some spelling variations:
"factores biologicos" » "factores psicologicos", "factores economicos"
"fvalores politicos" » "valores politicos", "factores politicos", "factores politico"
"ffactores criticos" » "factores criticos", "factores clinicos", "sectores criticos"
"actores politicos" » "factores politicos", "valores politicos", "factores criticos"
"ciclos politicos" » "efectos politicos"
"actos politicos" » "aspectos politicos", "factores 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 biologicos") or ((((("actores politicos") or ("ciclos politicos"))) or ((((("fvalores politicos") or ("ffactores criticos"))) or ("actos politicos"))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("factores biologicos") OR ((((("actores politicos") OR ("ciclos politicos"))) OR ((((("fvalores politicos") OR ("ffactores criticos"))) OR ("actos politicos")))))).
• Removing quotes may allow a broader search: (( factores biologicos ) or ((((( actores politicos ) or ( ciclos politicos ))) or ((((( fvalores politicos ) or ( ffactores criticos ))) or ( actos politicos )))))).
• Adding a wildcard symbol may retrieve word variants: (("factores biologicos") or ((((("actores politicos") or ("ciclos politicos"))) or ((((("fvalores politicos") or ("ffactores criticos"))) or ("actos politicos"))))))*.

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