This piece of HubL code can be used to search for a keyword in a single blog or multiple blogs.

You can use the below HubL code in a separate template for search page or in the blog-listing template. In case you are going to use in the blog-listing template, you will have to tweak it a little it to show the search list or the blog list depending upon if it is a search or not.

I have added comments to the code to make it self-explanatory.

    {# Get all query params #}
    {% set querys = request.query_dict %}
    
    {# Look for the search term in the query url. eg: www.example.com?search=hubspot #}
    {% if querys.search %} {% set search = querys.search %}{% else %}{% set search = "" %}{% endif %}
    {% set search_term = search|trim %}

    {# Make sure you actually have a search term #}
    {% if search_term|length > 0 %}

        

            
Search Results for: {{ search_term }}
        

        {# You can search multiple Blogs if you want, or just use 'default' #}
        {% set blog_ids = ['default', '0000000000', '1111111111', '2222222222' ] %}

        {% for blog_id in blog_ids %}

            {# The only limitation here is that the maximum number of recents posts #}
            {# that you can get from a blog using 'blog_recent_posts' method is 200. #}

            {% set posts = blog_recent_posts(blog_id, 200)  %}

            {% for content in posts %}
                {% if search_term|lower in content.post_list_content|lower or search_term|lower in content.name|lower %}
                    

                        

                            

                                
{{ content.name }}
                            
                            

                                
                                {{ content.post_list_content|safe|truncate(300, False, '[..]') }}
                                
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                {% endif %}
            {% endfor %}

        {% endfor %}

    {% endif %}

Hope this helps!