Perhaps you should try some spelling variations:
"factores psicologicos" » "factores psicosociales"
"factores biologicos" » "factores economicos"
"efectos politicos" » "aspectos politicos", "derechos politicos", "efectos juridicos"
"actos politicos" » "aspectos politicos", "factores politicos", "ciclos 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 ((("factores biologicos") OR ("factores psicologicos"))))) 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 ((("factores biologicos") OR ("factores psicologicos"))))) 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 (((\"factores biologicos\") OR (\"factores psicologicos\"))))) or (\"actos politicos\"))) or (((\"actores politicos\") or (\"factores criticos\"))))".
• Removing quotes may allow a broader search: (((((( efectos politicos ) or ((( factores biologicos ) OR ( factores psicologicos ))))) or ( actos politicos ))) or ((( actores politicos ) or ( factores criticos )))).
• Adding a wildcard symbol may retrieve word variants: (((((("efectos politicos") or ((("factores biologicos") OR ("factores psicologicos"))))) 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.