SAN FRANCISCO — Charles Schwab & Co. has introduced search technology to make it easier for clients to explore the company’s online educational and research material and to do advanced stock screening using natural language.

The technology lets clients ask questions as though they were talking to a customer service representative — for example, “How do I change my mailing address?” Even colloquialisms are recognized. “How do I plan for my golden years?” brings the investor to a page with a section on retirement planning.

Other features include an investment glossary, an integrated ticker symbol index that also recognizes permutations of company names, one-step navigation that takes clients to information with just one click, and in-depth stock research that lets clients ask complex questions.

“A Web site with Schwab.com’s depth of content requires a highly intelligent search capability,” said Robert Seidman, a senior vice president of Schwab Electronic Brokerage. “Uncertain economic times have investors actively seeking more information and guidance on their investing decisions.”

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