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" » "beiras ana investigacion", "beiras mas investigacion", "heras la investigacion"
"beira la investigacion" » "beira los investigacion", "vieira la investigacion", "era 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: (((("beira la investigacion") or ("vieira ana investigacion"))) or ("beiras la investigacion"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("beira la investigacion") OR ("vieira ana investigacion"))) OR ("beiras la investigacion")).
• Removing quotes may allow a broader search: (((( beira la investigacion ) or ( vieira ana investigacion ))) or ( beiras la investigacion )).
• Adding a wildcard symbol may retrieve word variants: (((("beira la investigacion") or ("vieira ana investigacion"))) or ("beiras la investigacion"))*.