Not like operator not working while matching text from two tables

Question

Hello  Everyone,
I want to find the Id from table child where the column name  is not matching with at least first term of column name from parent table.
I am not getting proper output. can anyone help me.
Output should be :-->ID 6 & 7
with child as
(select 1 id, 'Genentech'  as name from dual union all
select 2 id, 'Altana Pharma AG'  as name from dual union all
select 3 id, 'Yamanouchi'  as name from dual union all
select 4 id, 'Sigma-Tau'  as name from dual union all
select 5 id, 'Schering-Plough'  as name  from dual union all
select 6 id, 'Pharma AG'  as name from dual union all
select 7 id, 'Pfizer'  as name  from dual
), parent as
(select 1 id, 'Genentech number'  as names from dual union all
select 2 id, 'Altana Pharma AG'  as names from dual union all
select 3 id, 'AG site/Yamanouchi'  as names from dual union all
select 4 id, 'sigMa Tau'  as names from dual union all
select 5 id, 'Schering-Plough'  as names  from dual union all
select 6 id, 'AG'  as names from dual union all
select 7 id, 'Inc'  as names  from dual
select *
from child a, parent bc
where a.id=bc.id
and upper(a.name) not like (bc.names)

Answer 1

One way:
WITH child AS
        (SELECT 1 id, 'Genentech' AS name FROM DUAL
         UNION ALL
         SELECT 2 id, 'Altana Pharma AG' AS name FROM DUAL
         UNION ALL
         SELECT 3 id, 'Yamanouchi' AS name FROM DUAL
         UNION ALL
         SELECT 4 id, 'Sigma-Tau' AS name FROM DUAL
         UNION ALL
         SELECT 5 id, 'Schering-Plough' AS name FROM DUAL
         UNION ALL
         SELECT 6 id, 'Pharma AG' AS name FROM DUAL
         UNION ALL
         SELECT 7 id, 'Pfizer' AS name FROM DUAL),
     parent AS
        (SELECT 1 id, 'Genentech number' AS names FROM DUAL
         UNION ALL
         SELECT 2 id, 'Altana Pharma AG' AS names FROM DUAL
         UNION ALL
         SELECT 3 id, 'AG site/Yamanouchi' AS names FROM DUAL
         UNION ALL
         SELECT 4 id, 'sigMa Tau' AS names FROM DUAL
         UNION ALL
         SELECT 5 id, 'Schering-Plough' AS names FROM DUAL
         UNION ALL
         SELECT 6 id, 'AG' AS names FROM DUAL
         UNION ALL
         SELECT 7 id, 'Inc' AS names FROM DUAL)
SELECT *
  FROM child a, parent bc
WHERE a.id = bc.id
       AND UPPER (REGEXP_REPLACE (a.name, '[^[:alnum:]]')) NOT LIKE
              '%' || UPPER (REGEXP_REPLACE (bc.names, '[^[:alnum:]]')) || '%';
Regexp_replace can be avoided and replaced by translate there if you know for sure what characters you are expecting.
ID NAME ID_1 NAMES
1 Genentech 1 Genentech number
3 Yamanouchi 3 AG site/Yamanouchi
7 Pfizer 7 Inc
Cheers,
Manik.