How i print a page/tag/clube title using string?

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Hello, i need help. I want to know how i print (echo) a string on my theme. I want to make a better SEO for my games forum, how i do that?

Example: Tags Page.

We have a title for any tag, but i want to repeat this term. 

Example: *TAG* Forum | *TAG* Brazil | *TAG* Support. 

This feature will help a lot of please a create a better SEO.