We have developed a module that will exactly fulfill your need. Our module will search the complete odoo system for matching values and display it menu wise highlighting the matching records. It will also display you the native tree view so you can easily grab what you want. From there you can navigate to single or multiple records and perform actions on the records. It will be simply amazing, just take a look at our module here https://apps.odoo.com/apps/modules/9.0/odoo_real_global_search/.