Why Does A Search Engine Only Show Certain Matches When I Know Other Matches Are Available?
For privacy reasons I try to keep myself off “the grid” as much as possible. I know there are certain documents on-line that have my name on it, but those documents do not show up on any search engines. Why.
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If you want a page to appear in web search results, make sure that page includes some unique text to be indexed. Pages with no unique text or no text at all may drop out of the index or may never be indexed. Also, refer to the Site Guidelines to see whether your site is in compliance with Yahoo’s content policies. Sites that violate the Yahoo! Site Guidelines may be removed from the index.
Lastly, it is possible that your site was unavailable for crawling during an index refresh, and it could re-appear following another index update.