Search should have filters for language (e.g. English-only pages) & official Moz. manual pages only.
Hi x. Thank you for the report.
It sounds like this has some overlap with a request for an advanced search interface (http://is.gd/pocbv7). I will be sure the team takes this into account while planning.
And for HTML-only, JS-only, CSS-only. Get lots of pages for exotic technologies don't need ("XUL").