Perhaps you should try some spelling variations:
"beiras en investigacion" » "beiras e investigacion", "beiras la investigacion", "beiras ciencia investigacion", "letras en investigacion", "negras en investigacion"
"meiras de investigacion" » "meiras la investigacion", "detras de investigacion", "eras de investigacion", "meire de investigacion"
"mentiras de investigacion" » "mentiras la investigacion", "mentira de investigacion", "mentira del investigacion", "meninas de 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 en investigacion") or ((("meiras de investigacion") OR ("mentiras de investigacion"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("beiras en investigacion") OR ((("meiras de investigacion") OR ("mentiras de investigacion")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"beiras en investigacion\") or (((\"meiras de investigacion\") OR (\"mentiras de investigacion\"))))".
• Removing quotes may allow a broader search: (( beiras en investigacion ) or ((( meiras de investigacion ) OR ( mentiras de investigacion )))).
• Adding a wildcard symbol may retrieve word variants: (("beiras en investigacion") or ((("meiras de investigacion") OR ("mentiras de investigacion"))))*.