When performing an in document search in the web client, is it possible filter your search to only search annotations? By default, the in document search looks at both document text and annotation text. 

The workaround I have found is to perform a keyword search on the folder instead. This allows you to select just annotation text.

You can then reopen the document from the search results and only annotation text results are displayed: 

This is an annoying workaround though, as it requires several extra steps including leaving the document, redoing the search, and then reopening the document. It would be much more efficient and user friendly to be able to filter your search without having to leave the document. 

If anyone has found an easier way to do this, I would be very interested!