Hello Michael,

Please try with following steps:
First extend the input widget
var Input = Widget.extend( /* @lends instance.web.search.Input# /{
For specific model you can give condition like this:
if (self.searchview.action.env.modelName == 'hr.applicant')

In the base in the return AND condition is defined , you have to change with OR like this:
return pyUtils.assembleDomains(domains, 'OR');

e.g.
var Input = Widget.extend( /* @lends instance.web.search.Input# /{
if (self.searchview.action.env.modelName == 'hr.applicant')
return pyUtils.assembleDomains(domains, 'OR');

Thanks & Regards,

Email: odoo@aktivsoftware.com

Skype: kalpeshmaheshwari