In CRXDE there is a good search tool. Go to Tools - Query
Path: / <or a sub path to limit the search if you want to>
Text: <The text to search on>
Click Generate to a search that looks something like this,
SELECT * FROM [nt:base] AS s WHERE CONTAINS(s.*, 'asdf')
This is a default search, click Execute to run it.
If you want to search for a particular value you can manually alter the search and click Execute. A search for all the cq:commerceProvider values that equal 'geometrixx' is done as follows,
SELECT * FROM [nt:base] AS s WHERE CONTAINS(s.[cq:commerceProvider], 'geometrixx')