data-protection/contact_search_form/views/contact_search.xml

<?xml version="1.0" encoding="utf-8"?>

<odoo>

    <record id="view_dpo_form_view_itis" model="ir.ui.view">
        <field name="name">view.dpo.form.view.itis</field>
        <field name="model">dpo.view</field>
        <field name="arch" type="xml">
            <form string="Customer Info">
                <div class="oe_title">
                    <h1>
                        <field name="name" default_focus="1" placeholder="Search Terms" required="1"/>
                    </h1>

                </div>
                <group>
                    <field name="model_ids" widget="many2many_tags"/>
                </group>
                <br/>
                <br/>
                <center>
                    <button name="search_string" type="object" string="SEARCH" class="btn-primary"/>
                </center>
                <br/>
                <!--<group>-->
                    <field name="search_lines"/>
                <!--</group>-->
            </form>

        </field>
    </record>

    <record id="dpo_view_tree" model="ir.ui.view">
        <field name="name">DPO Tree view</field>
        <field name="model">dpo.view</field>
        <field name="priority">1</field>
        <field name="arch" type="xml">
            <tree string="Search Contact">
                <field name='name'/>
                <field name="model_ids"/>
                <field name="search_lines"/>
            </tree>
        </field>
    </record>

    <record id="action_dpo_view_itis" model="ir.actions.act_window">
         <field name="name">Customer Info</field>
         <field name="type">ir.actions.act_window</field>
         <field name="res_model">dpo.view</field>
         <field name="view_mode">tree,form</field>
         <field name="view_id" ref="dpo_view_tree"/>
         <!--<field name="target">new</field>-->
         <field name="view_type">form</field>
         <!--<field name="help" type="html">-->
             <!--<p class="oe_view_nocontent_create">No Content yet!-->
             <!--</p>-->
         <!--</field>-->
    </record>

    <menuitem id="menu_customer_info"
              action="action_dpo_view_itis"
              name="Contact Search"
              parent="contacts.res_partner_menu_config" sequence="3" groups="contact_search_form.group_dpo"/>

    <record id="search_line_tree_view_itis" model="ir.ui.view">
         <field name="name">search.line.tree.view.itis</field>
         <field name="model">search.line</field>
         <field name="arch" type="xml">
             <tree string="Search Results" create="false" delete="false" edit="false">
                 <field name="model_id"/>
                 <field name="record_id"/>
                 <field name="record_name"/>
                 <field name="field_list"/>
                 <button name="open_record" type="object" string="VIEW RECORD" class="btn-primary"/>
             </tree>
         </field>
    </record>

</odoo>