I visite am visiting a higher school in Zurich. My English is going on improving/progressing, but I must need to learn vocabulary in for Business English / learn Business English vocabulary. How can I learn these words fast quickly? I do not have a no good method for this case for doing this.

Anyway By the way I read now am now reading an interesting English book by Larry Smith. The book's title is "No fears, no excuses" - What you need to do to have a great career.

A High School is for children 13-18, and to visit means you go for a day to see the school. If you are there learning, you could say "I am attending a college", or "I am going to college to learn English", or "I am taking an English class at a college in Zurich".

Phrase — Why does the headline say Phrase if you wrote a short text, not a single phrase?

My English is going on, but I must learn Business English vocabulary in Business English. — To go on means to continue. In this case, a better option would be My English classes go on. Or did you want to say that your English gets better? In this case, say My English is getting better.

Anyway, I am reading now an interesting English book by Larry Smith. The book title is No fears, no excuses - What you need to do to have a great career.