yea. sure i agree with this because if you try to read about his specific keyword there's no information available in wikipedia or in oxford dictionary. You can also this word is spelled by some professional SEO's without getiing to dept of this word. As per i think is about this word is that do link building with relevant pages which is similar to your site!
Thematic optimization was probably used by a company to show how great they were at SEO as they were no1 for the term. My money is on searchmarketingsales!