NOT LIKE '%-DUP% not working correctly

Question

I have those two conditions in my code:
   AND b.spbpers_pidm = d.spriden_pidm
            AND (   c.spriden_last_name NOT LIKE '%-DUP% %See% ID#%'
                 OR d.spriden_last_name NOT LIKE '%-DUP% %See% ID#%' but I still seeing this in my output
Van Ness-DUPLICATE see ID#00251536
The idea is that if someone has the word duplicate after of before the last name, don't show it
for example if this record is like this in the c.spriden_last_name Van Ness-DUPLICATE see ID#00251536 don't show it
or id it is like this DUPLICATE Van Ness see ID#00251536 don't show it.
In another words if It contains '%-DUP% in the last name don't show it...
Thank you

Answer 1

Thhank you for all the answers, I still seeing the record that I am not suppose to see, the Idea is that if a records has the word DUPLICATE or DUP in the last
name, don't show it.
I got this
AND (   upper(c.spriden_last_name) NOT LIKE '%-DUP% %See% %ID#% ID#%'
                 OR upper(d.spriden_last_name) NOT LIKE '%-DUP% %See% %ID#%' ) and I still seeing the record.
Van Ness-DUPLICATE see ID#00251536
Here is the all query
SELECT DISTINCT c.spriden_pidm "PIDM1", d.spriden_pidm "PIDM2",
                c.spriden_id "ID1", d.spriden_id "ID2",
                a.spbpers_birth_date "BDAY1", b.spbpers_birth_date "BDAY2",
                c.spriden_first_name "FIRST NAME1", d.spriden_first_name "FIRST NAME2",
                c.spriden_last_name "LAST NAME1", d.spriden_last_name "LAST NAME2",
                c.spriden_user "USER", c.spriden_origin "ORIG",
                c.spriden_activity_date, d.spriden_activity_date,
                 ayvstat_primary_donor_code
           FROM saturn.spbpers a,
                saturn.spbpers b,
                saturn.spriden c,
                saturn.spriden d,
                alumni_midd.mv_ayvstat
          WHERE a.spbpers_birth_date = b.spbpers_birth_date
            AND a.spbpers_pidm <> b.spbpers_pidm
            AND AYVSTAT_PIDM = C.spriden_pidm
            AND c.spriden_pidm = a.spbpers_pidm
            AND b.spbpers_pidm = d.spriden_pidm
                AND (   upper(c.spriden_last_name) NOT LIKE '%-DUP% %See% %ID#% ID#%'
                 OR upper(d.spriden_last_name) NOT LIKE '%-DUP% %See% %ID#%' )
            AND c.spriden_soundex_last_name = d.spriden_soundex_last_name
            AND c.spriden_soundex_first_name = d.spriden_soundex_first_name
            AND c.spriden_activity_date >=
                                          TO_DATE ('04/28/2009', 'MM/DD/YYYY')