QueryBuilder case insensitive like operation AEM 6.4

I have  a JCR-SQL2 Query . And is being used by QueryManager to perform case insensitive search using lower() method. I want to do the same using QueryBuilder API. We are using aem 6.4 . and  fn:lower-case(jcr:content/jcr:title)   doesn't work.

SELECT * FROM[cq:Page]  WHERE ISDESCENDANTNODE(path) AND

( lower([jcr:content/jcr:title]) LIKE '%vehi%' OR lower([jcr:content/jcr:title]) LIKE '%auto%' )

UNION

SELECT * FROM[cq:Page]  WHERE ISDESCENDANTNODE(path) AND

( lower([jcr:content/jcr:description]) LIKE '%vehi%' OR lower([jcr:content/jcr:description]) LIKE '%auto%' )

UNION

SELECT * FROM[cq:Page]  WHERE ISDESCENDANTNODE(path) AND

( lower([jcr:content/cq:tags]) LIKE '%vehi%' OR lower([jcr:content/cq:tags]) LIKE '%auto%' )

ORDER BY [jcr:content/cq:lastModified] desc

Any inputs are helpful