Improving SEO on 2-word product without space

I hope the title is clear, but we have a product - let's call it "TwoWord". In our case, the two words used in the product name are real English words, but in our branding (logo, whitepapers, website, etc) we are always referencing the product as "TwoWord"; not "Two Word".

My question is, can we still improve our SEO when users search for "two word"? Is it beneficial on the website to put a hidden span in every time we reference the product like so:

TwoWord<span style="display: none;">Two Word</span> is a great product.

or

TwoWord<span style="visibility: hidden;">Two Word</span> is a great product.

How can we get Google and others to recognize us as both TwoWord and Two Word?

Thanks