The second string presented here sets no parameters on a search, no quotes, no plus-sign, it just fires away on wedding accessories.
The resulting pages in AV don't give me obvious clues. Something after "http://www.altavista.com/cgi-bin/query?" is clearly different between the two strings, but I don't know what the user may have turned on or off to give such different results to the search string.
This is a major boot-ocks problem for someone else to attempt to resolve on my behalf. But I would share resulting theories, truly I would.
Confession: I don't know and I wish I knew. I've studied that for hours on end trying to figure out what Alta was doing. I know most of the fields, but the "act" field pops up at random. "I think" it actually related to the users browser. I've tried to make the conection between the number and the browser id, but I've not been able too.
Nothing like a mystery, eh? Actually, they are two entirely different searches. One for wedding acessories (misspelled) and one for wedding accessories (correctly spelled). Checked the #1 site in the misspelled search and true enough, they had several misspellings for accessories among the keywords, including this one.
I also did the searches anew from here (Sweden) and the address strings looked completeley different from the ones posted. Might have something to do with language settings, referring domain and other statistical stuff they use.