How do these keywords match?

I did not understand.
Can you elaborate?

The op is asking how Google treats different, but similar looking characters, if I understand correctly.
The answer is - it treats them differently, but only to a certain extent. You are always better off optimizing for the keywords that you most want to rank for. At the same time, optimizing for the one variation of the keyword should provide benefit for the others.
Of course, anchor text variation is also important, so it is definitely worth it to include all probable ways to spell the keyword in your link building.