Perhaps you should try some spelling variations:
"lucan una investigacion" » "lucan de investigacion", "lucan e investigacion", "lucan ciencia investigacion", "lucas unas investigacion", "lucas un investigacion", "luca un investigacion"
"lucan ma investigacion" » "lucan a investigacion", "lucan iap investigacion", "lucan la investigacionr"
"lucan la investigacion" » "lucas la investigacion", "lucanor la investigacion", "duncan la 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: (("lucan una investigacion") or ((("lucan la investigacion") OR ("lucan ma investigacion"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("lucan una investigacion") OR ((("lucan la investigacion") OR ("lucan ma investigacion")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"lucan una investigacion\") or (((\"lucan la investigacion\") OR (\"lucan ma investigacion\"))))".
• Removing quotes may allow a broader search: (( lucan una investigacion ) or ((( lucan la investigacion ) OR ( lucan ma investigacion )))).
• Adding a wildcard symbol may retrieve word variants: (("lucan una investigacion") or ((("lucan la investigacion") OR ("lucan ma investigacion"))))*.