Its not about spoken languages its about the regional version of Google you are tryign to rank with. if you have the incorrect HREF lang tag then you will not be ranked in the correct regional version of Google. My answer is correct as a starting point
davidweb09 is talking nonsense I'm afraid. You need to make use of the hreflag tag in the website HEAD section. Google have an article about it here https://support.google.com/webmasters/answer/189077?hl=en