How can i advise in multiple languages[ Edited ]
How can i advise in multiple languages
When it comes to using multiple languages, you should have 1 language per campaign (usually). Language is set at the campaign level in the settings tab. It's best to have the keywords and ads in the same language as the campaign.
Here's an article on the subject: https://support.google.com/adwords/answer/1722078?hl=en