Hi,

You can inherit the corresponding search view make necessary changes(same thing can also be done from ui, using the debug mode), see: How To Inherit And Make Changes Inside Existing Search Views In Odoo

For doing it from the user interface, activate the debug mode and click the debugger button and click Edit Search View/ Edit Control Panel View, then add the necessary fields you need to search inside the view.

Thanks

Hello Rostyslav Sulym,

You can add filed in search view by adding your field in new view which must be inherited from the existing search view. 

<record id="sale_order_view_search_inherit_quotation" model="ir.ui.view">

            <field name="name">sale.order.search.inherit.quotation</field>

            <field name="model">sale.order</field>

            <field name="mode">primary</field>

            <field name="inherit_id" ref="sale.view_sales_order_filter"/>

            <field name="arch" type="xml">

                <xpath expr="//filter[@name='my_sale_orders_filter']" position="after">

                       <field name="your_field_name" />

                       <field name="your_field_name" />

                        <separator />

                       <field name="your_field_name" />

                </xpath>

            </field>

        </record>