I want to add option in search box list view , i have parent and child object .. the parent option is show up . But Child option doesn't show up .. heres my code :

.xml

<!-- PARENT -->

        <record id="view_penerimaan_faktur_filter" model="ir.ui.view">
            <field name="name">penerimaan.faktur.list.select</field>
            <field name="model">wtc.penerimaan.faktur</field>
            <field name="arch" type="xml">
                <search string="Search Penerimaan Faktur">
                    <field name="name" string="Reference"/>
                    <field name="branch_id"/>  
                    <field name="partner_id" string="Supplier"/> 
                    <filter name="draft" string="Draft" domain="[('state','=','draft')]"/>
                    <filter name="post" string="Posted" domain="[('state','=','posted')]"/>
                    <group expand="0" string="Group By">
                        <filter string="Branch" icon="terp-partner" domain="[]" context="{'group_by':'branch_id'}"/>
                        <filter string="Tanggal" icon="terp-go-month" domain="[]" context="{'group_by':'tgl_terima'}"/>                    
                    </group>
                </search>
            </field>
        </record>

<!-- CHILD -->

         <record id="view_penerimaan_faktur_filter" model="ir.ui.view">
            <field name="name">penerimaan.faktur.line.search</field>
            <field name="model">wtc.penerimaan.faktur.line</field>
            <field name="arch" type="xml">
                <search string="Search Penerimaan Faktur">
                    <field name="name"/>
                    <field name="customer_stnk"/>                    
                    <group expand="0" string="Group By">
                        <filter name="groupby_engine" string="No Engine" icon="terp-partner" domain="[]" context="{'group_by' : 'name'}" />
                    </group>
                </search>
            </field>
        </record>
                   
        <record model="ir.actions.act_window" id="penerimaan_faktur_action">
            <field name="name">Penerimaan Faktur STNK</field>
            <field name="res_model">wtc.penerimaan.faktur</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
            <field name="search_view_id" ref="view_penerimaan_faktur_filter"/>
        </record>
        <record id="penerimaab_faktur_line_form_action2" model="ir.actions.act_window">
            <field name="name">On Penerimaan Faktur Lines</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">wtc.penerimaan.faktur.line</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree,form</field>
            <field name="search_view_id" ref="penerimaan_faktur_line_search"/>
        </record>    

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if anyone know how to solve it , i beg u to share please.. thanks