any way to cut the house edge for CSM ?

buy both book of stanford , but it doesnt mention

much about way to cut edge from csm

may be its write more than ten years

any update and useful way can cut down the house edge??

I also buy another book from John May get the edge at blackjack

where I search he answer someone his book mention way to get edge from CSM , but I cant find any inside the book , its 2000 edition