How to Show Nodes under different flags in a view
I found out the solution for this question.

Refer:https://stackoverflow.com/questions/1340423/or-operator-in-drupal-view-filters?rq=1

If you are using Views 3 / Drupal 7 and looking for the answer to this question, it is baked right into Views. Where it says "add" next to filters, click the dropdown, then click "and/or; rearrange". It should be obvious from there.