SQL & PL/SQL

I'm trying to find a list of words with 2 or more vowels. The word can be mixed case.
This is as close as I have gotten but its incorrect. Can someone please help me out.

with data as (   
  select 'outLOOK' as word from dual union all    
  select 'today' as word from dual union all    
  select 'help' as word from dual    
)   
  select * from data   
  where regexp_like( word, '[aeiou]{2}' )
and LENGTH(word) > 5;