Perhaps you should try some spelling variations:
"beiras mas investigacion" » "beiras a investigacion", "beiras al investigacion", "beiras iap investigacion", "beiras la investigacion", "beiras notas investigacion"
"vieira la investigacion" » "vieira ana investigacion", "vieira de investigacion", "vieira e investigacion"
"beira la investigacion" » "beiras la investigacion", "beira los investigacion", "era 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: (((("beira la investigacion") OR ("vieira la investigacion"))) OR ("beiras mas investigacion"))~.
• Removing quotes may allow a broader search: (((( beira la investigacion ) or ( vieira la investigacion ))) or ( beiras mas investigacion ))~.
• Adding a wildcard symbol may retrieve word variants: (((("beira la investigacion") or ("vieira la investigacion"))) or ("beiras mas investigacion"))*.