Perhaps you should try some spelling variations:
"vieira ana investigacion" » "vieira una investigacion", "vieira para investigacion", "vieira en investigacion", "neira ana investigacion"
"beiras la investigacion" » "beira la investigacion", "beiras ana investigacion", "beiras mas investigacion"
"vieira la investigacion" » "vieira de investigacion", "vieira e investigacion", "beira la investigacion"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("beiras la investigacion") or ((("vieira la investigacion") OR ("vieira ana investigacion"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("beiras la investigacion") OR ((("vieira la investigacion") OR ("vieira ana investigacion"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"beiras la investigacion\") or (((\"vieira la investigacion\") OR (\"vieira ana investigacion\"))))*".
• Removing quotes may allow a broader search: (( beiras la investigacion ) or ((( vieira la investigacion ) OR ( vieira ana investigacion ))))*.