Thanks for your answer.

Thanks for your answer.
But I can query out only one element with multiple condition parameters. The problem is how I can use multiple elements in the xpath statement.
Such as:
"path/to/element1[condition_1][key = 'value1']" AND
"path/to/element2[condition_2][key = 'value2']"

I have been trying to accomplish to populate a list of nodes that corresponds to the conditional statement in javascript. I can now search only by project name, as shown in the statement below. However, I want to be able to filter the search by Project Name and Year, and so on. I know this can easily be accomplished in XSLT. Unfortunately, I can not use dynamic XSLT in Sharepoint. Is there any way that I can search my XML file based on multiple criteria?...