maybe the search result showed yesterday is taken from diffirent data center or because google update.
Yea, try searching manually. Happens to me sometimes, then I check and it's still there on most centers.
Not sure what that means? I have been manually searching all the search phrases from yesterday and all but one are gone. I am so ticked off!
Google shows different results to different people, and these differences are at "datacenters" (different IPs). You can check each of them with McDars tool.
True. Suddenly, you find all keywords gone because google searches in a different data center that time. Few days later, you might find the results back in the top again.
Same happened to me. I finally had some of my search terms show up in Google, now they are all but gone!! It's like taking candy from a baby!!