product_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

<record id="product_template_search_view" model="ir.ui.view">
    <field name="model">product.template</field>
    <field name="inherit_id" ref="product.product_template_search_view"/>
    <field name="arch" type="xml">
        <field name="name" position="attributes">
            <attribute name="filter_domain">['|', '|', ('default_code','ilike',self),('name','ilike',self), ('ean13','ilike',self)]</attribute>
        </field>
    </field>
</record>

<record id="product_search_form_view" model="ir.ui.view">
    <field name="model">product.product</field>
    <field name="inherit_id" ref="product.product_search_form_view"/>
    <field name="arch" type="xml">
        <field name="name" position="attributes">
            <attribute name="filter_domain">['|', '|', ('default_code','ilike',self),('name','ilike',self), ('ean13','ilike',self)]</attribute>
        </field>
    </field>
</record>

    </data>
</openerp>