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I am unable to reproduce this problem, the popup appears at the speed-of-internet for me. What browser are you using?
Dear Dan,

Search is due for an overall and some of your points will be taken into consideration, but I think you'll find that most of them are already implemented, just a little bit non-obvious, if you search for a word, say 'ananda', then you'll see a line saying
'Text Search: en: 93 | pi: 252 | vn: 139'

Click on pi, and you'll get the kind of results you are looking for, with snippets, if you want to get all the results on one page you can change the url, where it says 'limit=25' change 25 to 1000 or something - it doesn't hurt the server to deliver so many results at once.

For certain search tasks you will be better served by the Digital Pali Reader plugin for Firefox, this provides excellent results arranged in 'tipitaka order'. In fact Digital Pali Reader is so good for many kinds of tasks working with pali, that I am loathe to try and replicate it's functionality on Sutta Central. DPR is extremely mechanical in it's operation and not very bright. For SuttaCentral we are more aiming at something like Google, magically returning what you are probably most interested in.

A proper 'unified search' is in the pipeline, that is, google style results which mixes everything together. We are currently planning localized versions of sutta central, and search will be localized also. It may be that we'll have the main, non-localized site, focus on the root texts (i.e. pali) with a clear link 'Show english results?' redirecting to the localized results.

Our dev team is not very big, at the moment it is mainly me doing all the heavy lifting. So these things will take time to come about. Suggestions are welcome.

With Metta,
Bhante Nandiya.