How to use the search in the header line ?

Suggestions:
System has search provision for in menu, in global and in page.
Users can search for a particular word ‘in menu’ by entering the word in the search box. Users have to select ‘In menu’ from the search dropdown. If a user enters ‘Sales order’ in search and if the header label is ‘Sales’ (i.e Sales module is selected from SCM). Then the Sales order form, Sales order and Sales order amendment appear in the search list. If the user clicks ‘Sales order form’ then Sales order form opens.
Users can search for a particular word ‘in global’ by entering the word in the search box. Users have to select ‘In global’ from the search dropdown. If a user enters ‘Purchase order’ in the search box and if the header label is ‘Sales’ (i.e Sales module is selected from SCM) and then Purchase Order appears in the search list.
Users can search for a particular word ‘in page’ by entering the word in the search box. If Purchase Order records are listed and then users have to select ‘In page’ from the search dropdown. If the user enters ‘GOOD’ in the search box then the system will show only those records having ‘GOOD’ word in it.
Please refer to the below screenshot. search.png