Assuming you mean search in general and not just conversation search, the answer to that question is "yes, but no".
Technically it's possible, but this is a default limitation of the database (MySQL) underneath XenForo. While it technically can be changed, for various performance reasons there's no way I'm changing that to "1".
Now, the deeper and perhaps better question is, what does searching for "X-170" (in quotes) not work, since the search engine should treat that as a 'phrase' and return results for it. As of right now I don't know what the answer for that question is.
There are better search engines out there for XenForo, and all of them rely on something called "elastic search". Elastic Search is a product that needs to be installed at the OS level and is a relatively serious undertaking. It's definitely on my radar, but I need to dedicate an entire day or to making sure it's done right and an entire day of focus is hard for me to come by.