I can't tell you how to fight one opponent over Yahoo Answers, let alone multiple. It's just not something you can learn online.
Fighting multiple opponents takes a lot of skill in the right style to pull off. It's not impossible; it has been done before. It's just hard to do.
Just remember, when you are defending against multiple opponents, the goal is not to beat all of them to the ground. It could simply mean throwing a few strikes then running. The goal in any fight is never to win, but to not lose. This means surviving and escaping.
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I see, you were looking for strategies. Well, throwing one opponent into another is a great move because it will bring two opponents to the ground. You should also utilize critical points whenever possible, like kicks to the groin. If necessary (which it probably will be) go for bone breaking strikes, like a roundhouse kick to the ribs (you are Chuck Norris after all), good kicks to the knee, or arm breaks. Just make sure to run as soon as it is possible.