Yhä is maybe the most old fashioned and dramatic one, and usually not so used in spoken language. I did some googling and found these sentences in online magazines:
- Olemme yhä naimisissa! - We are still married!
- Sormus on yhä sormessa. - The ring is still on the finger.
Usually people say vielä or edelleen.
- Asutko sä edelleen Helsingissä? - Do you still live in Helsinki?
- Seurusteleeko se vielä Villen kanssa? - Is she still dating Ville?
Notice that still can also be silti, and vielä can also be yet or additionally.