Iโd like to develop tags being multiple filtered.
For example, If there is red, yellow, 2020 in the category, I want the posts with the tags red and 2020 to be sorted and displayed when the user clicks red and 2020.
(However, I want this function to be done on one page.)
What cookbook or reference can I refer to??
Please help. 
These two resources should be helpful:
However, if you want to use โandโ instead of โorโ for the filtering logic, then you have to adapt the logic.
Showing the filtered results on the same page is just a matter of where the filtering happens.
Instead of using standard form-based filtering, you might want to consider a JavaScript based solution though, for example https://listjs.com/ or
