The underscore in oracle SQL, when it’s used in LIKE clause represent a one character wild card.
For example:
like ‘V_KAA’ (returns VaKAA, VbKAA)

But you want to find something like V_KAAA (including a under score_), you would need to escape the _ character in like clause.

For example:

select * from table where ID LIKE 'V\_KAAA' escape '\'

(put the escape character in front of character you want to escape, and use escape clause to specify the character that you used for escape.)

The above example escapes with character \. So _ become just underscore, not the one character wild card used in Oracle SQL.