Do you know how I go to the tags search bar?

click on a random manga, and there will be "top tags". click on them.

http://www.mangago.me/tag/Royalty/

use the search bar if you want to search for another tag

you can either use
http://www.mangago.me/tag// and imput the tag you want
OR
you can scroll down to any random manwha or manga and there should be a popular tag thing
click it and you should be able to search another one

Use this!
http://www.mangago.me/tag/

or after you type "Mangago.me" do "/tag/

hope this helps!