Yahoo! (NASDAQ:YHOO) and Microsoft (NASDAQ:MSFT) aren't working out as search partners, and a source is telling The Wall Street Journal that Yahoo! wants to end its deal with Microsoft's Bing.

There's a problem. Yahoo! signed a 10-year deal to let Bing take over its search business three years ago. Since Microsoft can't generate the same kind of ad revenue as Google (NASDAQ:GOOGL), it isn't a surprise that Yahoo! is disappointed with Bing despite Microsoft's ad revenue guarantees.

In this video, longtime Fool contributor Rick Munarriz explores why taking a big check from Microsoft didn't pan out for Nokia (NYSE:NOK), and it's clearly not working out for Yahoo!. 

Longtime Fool contributor Rick Munarriz has no position in any stocks mentioned. The Motley Fool recommends Google. The Motley Fool owns shares of Google and Microsoft. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.