SAN FRANCISCO - Yahoo is leaning on Google's expertise in Internet search and advertising in its latest attempt to boost its revenue. 

The proposed three-year partnership was announced Tuesday after Yahoo released its third-quarter results. The numbers represented the latest in a long succession of disappointing performances for Yahoo, with the company's net revenue slipping 8 percent from the previous year.

Yahoo Inc. tried to team up with Google in search during 2008 as part of its defense against a takeover attempt by Microsoft. The Google alliance unraveled after the U.S. Justice Department threatened to block the partnership on the grounds that it would thwart competition. 

The new deal still must be approved by antitrust regulators. Yahoo will still rely on technology from Microsoft's Bing search engine as part of a 6-year-old partnership.