Here are some the ones I've seen:

• Topcoder's tutorial
• TJHSST has some good introductions. You can find the rest of them here. There are some more advanced articles.
• A few people have some very helpful advice on this Quora thread.

Other than that, you shouldn't really by looking to get better at dynamic programming by reading theory. The requisite concepts are very easily learned, but not so easily recognised in problems. Sites like Codeforces/Topcoder have very good selection of DP problems.

someone searched google and he's still alive . tested

Maybe you should buy a professional book about DP :)