Perhaps you should try some spelling variations:
"factores politicos" » "actores politicos", "factores criticos", "actos politicos"
"aspectos politicos" » "aspectos juridicos", "aspectos eticos", "aspectos psicologicos"
"efectos politicos" » "efectos positivos", "derechos politicos", "efectos fisicos"
"efectos juridicos" » "aspectos juridicos", "actos juridicos"

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