Search descriptions are inaccurate for most of our search results for my website. How can I fix?

[Jake]

Search engines often use the Meta Description in a search result description, a short paragraph embedded in the page code you can tailor for each page.
Their guesses getting it wrong may be an indication of weak keyword matching.

Actually searching by a site's name is not a typical test, searching the subject of one of your pages might result in a sampling of that page's text that better matches the search entered.

If it's still accessible you might try entering your site or page address into the Google Keyword toool, it will scan your page like a search spider and tell you they keywords it thinks represent that page.
https://adwords.google.com/select/KeywordToolExternal