Hi yogest, you cannot add the text box in the search view. You can add a filter for the search box.Try this example code in the your xml "search "view

        <record id="view_account_analytic_account_search" model="ir.ui.view">
            <field name="name">account.analytic.account.search</field>
            <field name="model">account.analytic.account</field>
            <field name="arch" type="xml">
                <search string="Analytic Account">
                    <filter string="Draft" icon="terp-go-home" domain="[('state','=','draft')]"  />
                    </group>
                </search>
            </field>
        </record>