In Vista Explorer, how can I search the contents of all files in a directory for a word?

I have a PHP website in a directory on Vista.

Many files in that directory have the word "output" in them. In Windows Explorer, I type "output" into the search box. It finds two files but does not find the others.

What do I have to do to make Vista's Explorer search accurate and reliable?

Currently I solve this by opening Eclipse and doing a global search which works great, it would just be nice if I could do this without the 20-second wait to open Eclipse every time.

Here are my search options; I've got everything turned on:

I have also searched far and wide for this. It seems the "include non-indexed" options still excludes certain file types (I have set up a similar test, and if I rename the file to .txt it works, rename back to .php and it can't find it). It seems the only way to get around that is to actually force vista to search that file type instructions here.

However for me prepping Vista for every extension I might want to search isn't a solution. I tend to use a free utility called agent ransack. It allows you to specify a folder, and will search for file contents, and considering its brute force mechanism, it is surprisingly fast.

I use Notepad++ for that kind of searching. It's lighter to open than Eclipse and you have a nice output and many other options. Of course there are many other tools, but I like this one.