Searching through all collections

Hi

I am creating an app with multiple collections.
Current search feature does not search in all collections. It searches and shows the results of opened collection only.
I want a word/phrase to be searched in all collections.
In SAB/RAB, this will b great feature, if anyone creates app like library, with multiple collections in multiple languages/dialects of any language.
Please consider my request for upcoming update.

Thanking you in advance.

Raja Sand

Has anyone gone through this suggested feature?

This will be surely great feature for multiple collections.
As there is selectable option “Match whole word”, likewise there should be a feature/option for “Search all collections”.
Hope for best.