How do I create a child layout which fills in multiple "content" holes in its parent layout?

Here is the parent layout:

% assign products_hash ={{ page.product-collection }} %}
{% assign products = products_hash[{{page.product-collection}}] %}
<div class="page-header text-center">
  <h2>{{ page.title }}</h2>
{{ page.content }}
<div id="products" class="row list-group">
  {% for product in products %}
    <div class="item  col-xs-4 col-lg-4">
      <a href="{{ "/" | append: product.slug | prepend: page.product-collection | prepend: '/' | prepend: site.baseurl }}">
        <div class="thumbnail">
          <img class="group list-group-image" src="{{ "/assets/" | append: product.cover-photo | prepend: site.baseurl }}" alt="product image" />
          <div class="caption">
            <h4 class="group inner list-group-item-heading">{{ }}</h4>
            <p class="group inner list-group-item-text">
              {{ product.short-description }}
  {% endfor %}

I would like to have multiple “holes” in this parent layout which can be filled in by a child layout. I can create a single “hole” by using {{content}}. Is there a way to do this in multiple places in the same parent layout?

Not sure what your use case is… but would simply using includes not work?

As in, could you move everything in the “products” div into a separate html file and include?