Perhaps you should try some spelling variations:
"beira con investigacion" » "beira en investigacion", "beira foca investigacion", "beira fcsh investigacion", "baila con investigacion", "beira los investigacion", "letra con investigacion"
"negra con investigacion" » "negra en investigacion", "negra foca investigacion", "negra fcsh investigacion"
"beira la investigacion" » "beiras la investigacion", "beira los investigacion", "vieira 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 ((("beira con investigacion") OR ("negra con investigacion"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("beira la investigacion") OR ((("beira con investigacion") OR ("negra con investigacion")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"beira la investigacion\") or (((\"beira con investigacion\") OR (\"negra con investigacion\"))))".
• Removing quotes may allow a broader search: (( beira la investigacion ) or ((( beira con investigacion ) OR ( negra con investigacion )))).
• Adding a wildcard symbol may retrieve word variants: (("beira la investigacion") or ((("beira con investigacion") OR ("negra con investigacion"))))*.