Eliminate document properties from search results which are null or blank

[AsfandHikmat]

Is your feature request related to a problem? Please describe.
I am playing around with Dejavu and many of my document properties are null or blank.

Describe the solution you'd like
When i click on the search button via the search preview I don't want the results to include properties from the doc where the properties are blank or null,

Describe alternatives you've considered
I haven't considered any alternative so far.

Additional context
Lets say i have a document like this
{"firstName":"Asfand", "lastName":"Hikmat","Location":"UK", "salary":null},
{"firstName":"Maria", "lastName":"ZaiZai", "location":"UK", "salary":"2000$"

When i search for this document in the search UI for UK can the result set include something like this.
"firstName":"Asfand", "lastName":"Hikmat","Location":"UK"
"firstName":"Maria", "lastName":"ZaiZai", "location":"UK", "salary":"2000$"

Note for the first doc since salary is null we don't show it in the search UI.