Hi,

check the below code it will give you an idea how to group

<record id="view_student_search" model="ir.ui.view">
    <field name="name">student.student.search</field>
    <field name="model">student.student</field>
    <field name="priority" eval="8" />
    <field name="arch" type="xml">
        <search string="Student">
            <field name="name" />
            <field name="blood_group" />
            <newline />
            <group expand="0" string="Group By...">
                <filter name="blood_group" string="Blood Group"
                    domain="[]" context="{'group_by':'blood_group'}" />
                <filter name="course_id" string="Course"
                    domain="[]" context="{'group_by':'course_id'}" />
            </group>
        </search>
    </field>
</record>