Yahoo on Monday reported second quarter earnings that fell just short of Wall Street estimates but left investors and analysts waiting to hear about progress in finding a strategic investment partner. Negotiations over the potential sale of the company's core assets are under way. The company reported earnings from operations of $39 million, or 9 cents a share in the second quarter, compared with earnings of $108 million or 16 cents in the year-ago quarter. The company reported a net loss of $440 million, or 46 cents a share, compared with $22 million, or two cents in the year-ago quarter.