Hi,

just in case you were wondering how you can check all properties:

node = theNodeYouAreWorkingWith;
foreach (umbraco.presentation.nodeFactory.Property property in node.Properties)
            {
                DoYourThingWithValue(property.Value);
            }

or

node = theNodeYouAreWorkingWith;

var allFieldsContent = "";




foreach (umbraco.presentation.nodeFactory.Property property in node.Properties)
            {
                allFieldsContent = allFieldsContent + " " + property.Value;
            }

DoYourThingWithValue(allFieldsContent);

 
Also you can create a nodeTypeAlias filter using prevalues (Thats what I would do). 
For an example you can take a look at the umbsearch2 source.

I hope this helps!

Ron