select statement

Hi Guys,

Whats wrong in my select statement.,

SELECT lifnr

xblnr

bukrs

inv_date

invr_date

zterm

dmbtr

waers

kursf

status FROM zinv_reg INTO TABLE lt_reg

WHERE status EQ 'CL'

AND bukrs EQ p_ccode

OR ( lifnr EQ p_vendor OR lifnr EQ ' ' )

OR ( invr_date GE so_date-low and

invr_date LE so_date-high ).

Here I need to pick only records where the data in between so_date-low and so_date-high, but with this select statement it is picking all the records.,

Can and one tell me how to do it.,

Regards,

Line