Where is code located wordpress

I was told that in my theme oxygen which I am using for woocommerce that I needed to change the html in the following on the category page but I cannot for the life of me find it.

<div class="main">
<div class="laborator-woocommerce shop">
    <div class="row">...</div>
    <div class="codenegar-shop-loop-wrapper">
        <div class="row">...</div>
        <!-- Here is the problem -->
        <div class="row">...</div>
        <!-- Here is the problem -->
        <div class="col-md-3 sidebar-env">...</div>
    </div>
</div>

Change to

<div class="main">
    <div class="laborator-woocommerce shop">
        <div class="row">...</div>
        <div class="codenegar-shop-loop-wrapper">
            <div class="row">...</div>
            <!-- Here is the change -->
            <div class="col-md-9">...</div>
            <!-- Here is the change -->
            <div class="col-md-3 sidebar-env">...</div>
        </div>
    </div>
 </div>

If you have a look at the source here http://ift.tt/1I8opJq you can see what I am trying to fix is the sidebar floating to bottom the below does fix it but i cant see how row is being generated in the source

via Chebli Mohamed