Perhaps you should try some spelling variations:
"lucas ii investigacion" » "lucas iii investigacion", "lucas iv investigacion", "lucas iap investigacion", "lucas i investigacion", "lucas el investigacion", "lucas la investigacion"
"lucanor e investigacion" » "lucanor de investigacion", "lucanor la investigacion", "lucanor de investigaciones", "lucanor et investigacion", "lucanor y investigacion"
"lucas a investigacion" » "lucas la investigacion", "lucas una investigacion", "lucas de investigacion", "lucas f investigacion", "lucas i investigacion"

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