Perhaps you should try some spelling variations:
"sagan una investigacion" » "sagan de investigacion", "sagan e investigacion", "sagan ciencia investigacion", "sagan une investigacion", "sagan unde investigacion", "sagan unen investigacion"
"lacan a investigacion" » "lacan e investigacion", "lacan de investigacion", "lacan en investigacion", "lacan y investigacion", "bacan a investigacion", "atacan a investigacion"
"lujan la investigacion" » "lujan le investigacion", "lujan lde investigacion", "lujan len investigacion", "lujan de investigacion", "juan la investigacion", "duran la investigacion"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lacan a investigacion") OR ("sagan una investigacion"))) OR ("lujan la investigacion"))~.
• Removing quotes may allow a broader search: (((( lacan a investigacion ) or ( sagan una investigacion ))) or ( lujan la investigacion ))~.
• Adding a wildcard symbol may retrieve word variants: (((("lacan a investigacion") or ("sagan una investigacion"))) or ("lujan la investigacion"))*.