There are many reasons why any broad, general purpose search engine like Google will not serve specialized needs such as in financial research.

- inclusions. Google does not index SEC filings.
- noise, or what it should, but does not exclude. There are too many sources of news and opinion
- relevance. Google uses page rank which is not very useful for financial research
- “page is the destination”. When there is dense information on a company from a high credibility source, like an earnings call transcript, returning a link to a transcript is not of much use. You want to go to the exact place where management (say) gave their reasons for missing the quarter.
- no control over timeline (though Google Labs is playing around with this)
- no way to constrain search to ticker, industry

Some of these problems are tough problems to solve. Most of them will never be addressed by Google simply because they serve the needs of hundreds of millions of users from all walks of life. Not hundreds of thousands of researchers.

If your readers are interested in search for research

http://www.gridstoneresearch.com/search/search/search-for-text-or-data.html