Perhaps you should try some spelling variations:
"factores biologicos" » "factores psicologicos", "factores economicos"
"aspectos politicos" » "aspectos juridicos", "aspectos eticos", "aspectos psicologicos"
"efectos politicos" » "derechos politicos", "efectos juridicos", "efectos fisicos"
"actos politicos" » "factores politicos", "ciclos politicos", "partidos politicos"
"factores criticos" » "factores critico", "factores critica", "factores critical"

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

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.