AjaxSearch—Slow/No Results

I’m attempting to set up an AjaxSearch on my site but I’m having some difficulty.

Here is my call:


Whenever I perform a search the default "spinning" image pops up but never goes away to show results. If I limit it to one of the resource parents it will actually return some results, but still takes a while—if I include all four parents it doesn’t return anything.

Am I just trying to search through too many resources? Thanks for any input!

I’m using Modx Evo, AjaxSearch 1.9.2, here is the debug info: http://pastebin.com/6XDHCSfy

Edit:
Also, if I hit "Return" after typing something in I get a PHP debug error:

Error: mysql_free_result(): supplied argument is not a valid MySQL result resource
Error type/ Nr.: Warning - 2
File: .../assets/snippets/ajaxSearch/classes/ajaxSearchRequest.class.inc.php
Line: 69
Line 69 source: mysql_free_result($records);

Try

[!AjaxSearch? &liveSearch=`1` &withTvs=`countries` &parents=`32,33,34,35`!]

By default &ajaxSearch=`1`.
To search in a tv uses withTvs parameter. If you would like avoid a search in content and other Tvs you could add &whereSearch=`content:null`

By default &depth=`10`.
Keep in mind that the search will occurs in children documents of 32,33,34,35.
For a search inside these documents (and children) specify the father document.