Re-Search Engine...?

Hello everyone,

Does anyone know how or where to find archives of published articles on the net?

For e.g., let's say you wanted to find articles that might be useful to hairsalon operators, or a computer store owner, or a piano store operator etc... Where could you find worthwhile articles that discuss topics relevant to those types of businesses?

Is there a search engine for something like that?

Any suggesstion would be highly appreciated.

Mark