I've been claiming 0 on my W-4 for the last few years and continue to owe on my taxes, any suggestions?

I am married, we do not own a home and try to deduct as much as we are able to. It's very frustrating, because usually when we do just my husband's taxes we get a refund, add my into the equation and we owe. I'm still paying off the irs from years past, help!
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