Needing coupons..but not sure where to get them

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With me being laid off recently I was thinking that me using a few coupons while buying groceries would probably help us out alot. My problem is I'm not sure where to go exactly to print them off. I've tried to google them but all the coupons I come up with are for stuff that we'd never buy. I was trying to find coupons for like shampoo, toothpaste, tooth brushes, etc. No necessarily food groceries. Any suggestions?!