Perhaps you should try some spelling variations:
petera » peter (Expand Search), peters (Expand Search), petra (Expand Search)
petrov » petro (Expand Search), peterov (Expand Search), petruov (Expand Search), petroov (Expand Search)
petruue » peteruue (Expand Search), petruuue (Expand Search), petrouue (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
peteri » peterdi (Expand Search), peter (Expand Search), peters (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((((petruue OR petera) OR petrov) o) OR ((petr OR ((petri OR peroi) OR peteri)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruue OR petera) OR petrov) o) OR ((petr OR ((petri OR peroi) OR peteri)) _)). s.*".