Perhaps you should try some spelling variations:
"meiras de investigacion" » "meiras la investigacion", "meiras dla investigacion", "meiras dde investigaciones", "mentiras de investigacion", "detras de investigacion", "eras de investigacion"
"beiras en investigacion" » "beiras la investigacion", "beiras ciencia investigacion", "letras en investigacion", "negras en investigacion", "beiras lan investigacion"
"beiras e investigacion" » "beiras la investigacion", "beiras de investigaciones"

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: (((("beiras en investigacion") OR ("beiras e investigacion"))) OR ("meiras de investigacion"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"beiras en investigacion\") OR (\"beiras e investigacion\"))) or (\"meiras de investigacion\"))~".
• Removing quotes may allow a broader search: (((( beiras en investigacion ) OR ( beiras e investigacion ))) or ( meiras de investigacion ))~.
• Adding a wildcard symbol may retrieve word variants: (((("beiras en investigacion") OR ("beiras e investigacion"))) or ("meiras de investigacion"))*.