Perhaps you should try some spelling variations:
"factores biologicos" » "factores psicologicos", "factores economicos"
"factores politicos" » "actos politicos", "factores climaticos", "efectos politicos", "factos politicos"
"valores politicos" » "valores eticos"
"actores politicos" » "actos politicos"
"factores critical" » "factores clinico", "factores clinicos", "factor critico"

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

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.