Search results titles

Greetings, I have a question about how the titles display in the search results. Currently when a page is returned I get the word “archives” in the title. Im not sure how to post an image, but you can find what im speaking of by going to this page https://i1080.photobucket.com/albums/j332/Zaino111/archivesresults_zps2c9a4e2c.jpg

I am using the Yoast plugin and have gone through his tutorial and perhaps I am missing something in his set up?

Thanks