Perhaps you should try some spelling variations:
"esgotamento los recursos internos" » "esgotamento dos recursos internos" (Expand Search), "esgotamento de recursos internos" (Expand Search)
esgotamento y » esgotamento de (Expand Search), estamento y (Expand Search), esgotamento dos (Expand Search)
"Esgotamento y recursos internos" » "Esgotamento de recursos internos" (Expand Search)

Try widening your search to All Fields.

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