May be this will help you.

<record id="give filter name" model="ir.ui.view">

<field name="name">res.partner.name</field>

<field name="model">res.partner</field>

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

<search string="Search Partner">

<filter string="Customers" name="customer" domain="[('customer','=',1)]" help="Customer Partners"/>

</search>

</field>

</record>