Koori means ice and -chan is a Japanese honorific, usually used by kid and teen girls, mostly to other girls. Calling one who is superior (like your boss) -chan it is considered rude.
For example if your friends name was Yuki (which means snow in Japanese by the way) then you refer to them as, "Yuki-chan."
Deniva does not mean anything in Japanese.
"Olga" is not a Japanese word or name, so it doesn't mean anything at all in Japanese. Did you mean, "What is the name "Olga" translated to in Japanese?"
Kaitlyn does not mean anything in Japanese, but can be written in Japanese as: ケイトリン
The name 'Collin' does not mean anything in Japanese, but it can be written in Japanese as: コリン
This does not mean anything in Japanese.
It does not mean anything in Japanese, but it can be written: ビンセント
what does it mean in English and I'll find out what it means in Japanese for you
Krystle does not mean anything in Japanese, but can be written: クリスタル
It does not mean anything in Japanese, but can be written: マーラナ
The name Tony does not mean anything in Japanese, but can be written: トニー
The name Sandy does not mean anything in Japanese, but can be written: サンディー
The name Savannah does not mean anything in Japanese, but it can be written as: サバナ