Temporary market conditions are weighing on these stocks, but in the long run, they can still be great buys.Billionaire investor Warren Buffett isn't afraid to buy struggling stocks. He likes opportunities such as when businesses get into what he calls "temporary trouble," saying that he wants to buy stocks "when they're on the operating table." In the short term, it can be an unnerving situation for investors to buy shares of a company that looks to be in a tailspin. But if the fundamentals remain strong a ...