Here is a site that can help you with online searches. For a given name, it will tell you what alternatives are in several different languages (English, Czech, French, German, Hungarian, Italian, Lithuanian, Polish, Slovak, Russian, and Yiddish/Jewish).
You start by looking up the “root” of the name, and then you read a table to see the male and female variations in each language.
As an example, I started with “Peter” and found Pierre and Pierrick in French, Peter and Peti in Hungarian, Peko and nine others in German, and Petechka plus a bunch more in Russian.
The list you are given is in PDF format, so you need the free Adobe reader to use the site. Start your exploration at Equivalent Czechslovakian, English, French, German, Hungarian, Italian, Lithuanian, Polish, Slovak, Russian & Yiddish Foreign Given Names