To change the cache of your website, Go to the Google public URL removal tool. https://www.google.com/webmasters/tools/removals
and then send your request to remove your existing cache, but be careful because it is quite tricky.
Type your web pages link and the words that you have changed from your content then click remove cache.
Once your request has been processed and Google confirms that the submitted word(s) no longer appear on the page, the search result will no longer show a snippet, nor will the cached page be available.
However, once the page has been re-crawled and re-indexed, the updated snippet and cached page can be visible in our search results.