Escaping WP_Query tax_query when term has special character(s)

Here’s my issue. I have a custom post type that I’m attaching a custom taxonomy to. This taxonomy will allow the admin to provide search suggestions that will ensure the post is found when a user searches. This taxonomy is also used on the front-end to autocomplete the search field with these suggestions.

Dynamic content in a static page

I have developed some calculators (in php) for my website and I need WordPress integration.
The calculators have a form and, after submission, the result is shown. The result depends on a query in the database. Is it possible to create “static pages” (at least static URLs) that provide to the user dynamic content?