Actionscript 2.0 :: Find Keywords In A Loaded XML?

I have a question that's been daunting me for quite a while. I've found a way to do this (kind of bootleg) however I'm wondering a way of better executing this.Scenario:I'm loading an external XML file, with numerous items. Each item has it's own 'description' tag. What I'm trying to figure out is how can I more properly execute this:- Find multiple keywords in all loaded items, if I find any of the selected keywords how can I fire off a separate function to my project (Example: If I find the word "hamburger" in one of the lets say, 54 loaded entries, how can I tell my flash project "if you find "hamburger", hamburgers = 1). Same thing goes if I find "hamburger" within 4 xml items, and "hotdogs" in 12 of the entries making flash know hamburgers = 4 and hotdogs = 12.

My predicament really is on ruling out numerous incorrect amounts. Example, If one xml item has hamburger three times, and another xml item has hamburger only once, getting only one valid "hamburger hit" (that was cleaver terminology, wasn't it? ) instead of three hits for that one xml item.So, I'm trying to let flash know, if you notice "hamburger" once, and only once in an xml item, stop counting the hamburgers, and the item's hamburger value is only 1. If the item has no keywords (example, hamburgers, hotdogs, watermelons, soda, blah blah, (lets say a total of 30 keywords) ) do nothing and do not count the item and move to the next for keyword function searching.