select on view does not returns data

I have a view that belongs to the user tasy, when I query the view using the user tasy, the query returns 159 rows. I granted the permission to user laboratorio to query the view, using the following code:

grant create session to laboratorio;

grant resource to laboratorio;

GRANT SELECT ON tasy.PRESCR_LABORATORIO_V TO laboratorio;

But when I query the view using a simple " select * from tasy.PRESCR_LABORATORIO_V" the query returns no rows.

I can't find where is the problem.

My oracle version is:

SQL> SELECT * FROM V$VERSION;

BANNER

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Oracle Database 11g Release 11.2.0.4.0 - 64bit Production