FS00 search help not working properly

Hi,

For transaction FS00 I am unable to search the entries in search help through long text description which is in braces i.e. if I am trying to find the values through search help based on Long text no value is coming even though there is 1 entry.

Ex:

If I want to search G/L account based on long text *tax book* (which is written in braces).

Searching for entry G/L Account - 143020 through long text as *tax book*

And result was 'No values for this selections'.

For the same I am the value if search like *ACC*, *Dep* otherthan text in braces.
Please help me on this, whether is a standard SAP behaviour or might be something went wrong.

Regards,

Srivijay