Perhaps you should try some spelling variations:
petrow » petro (Expand Search), petrowna (Expand Search), peterow (Expand Search), petruow (Expand Search), petroow (Expand Search)
petrov » petro (Expand Search), peterov (Expand Search), petruov (Expand Search), petroov (Expand Search)
petrvw » petervw (Expand Search), petruvw (Expand Search), petrovw (Expand Search)
petruiw » peteruiw (Expand Search), petruuiw (Expand Search), petrouiw (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 (((petrvw OR (((petrow OR petruiw) OR petruiw) OR petri)) o) OR ((petrov OR petr) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petrvw OR (((petrow OR petruiw) OR petruiw) OR petri)) o) OR ((petrov OR petr) _)). s.*".