Perhaps you should try some spelling variations:
"neira maria investigaciones" » "neira macias investigaciones", "neira para investigaciones", "neira mira investigaciones", "neira marian investigaciones", "eneida maria investigaciones", "nora maria investigaciones"
"secas la investigacion" » "lucas la investigacion"
"secas de investigacion" » "becas de investigacion", "secado de investigacion", "cas de investigacion"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("secas la investigacion") or ("secas de investigacion"))) or ("neira maria investigaciones"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("secas la investigacion") OR ("secas de investigacion"))) OR ("neira maria investigaciones")).
• Removing quotes may allow a broader search: (((( secas la investigacion ) or ( secas de investigacion ))) or ( neira maria investigaciones )).
• Adding a wildcard symbol may retrieve word variants: (((("secas la investigacion") or ("secas de investigacion"))) or ("neira maria investigaciones"))*.