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

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.