Toshimasa is a name, and depending on the kanji can mean many things.
Toshimasa Toba was born on 1975-07-16.
Toshimasa Niiro is 169 cm.
Toshimasa Takahashi was born in 1959.
Toshimasa Takahashi died in 2003 of stroke.
Toshimasa Miyatake has written: 'Burakushi yukari no chi' -- subject(s): History, Buraku people, Discrimination
Toshimasa Deguchi has written: 'Kaisha no zeimu to keiri' -- subject(s): Corporations, Taxation, Law and legislation
Toshimasa Tanai has written: 'A Mio-Pliocene flora from the Ningyo-toge area on the border between Tottori and Okayama Prefectures, Japan' -- subject(s): Paleobotany
Didi does not mean anything in Japanese.
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