Perhaps you should try some spelling variations:
petrow » petrov (Expand Search), petrowna (Expand Search), petrovw (Expand Search), petruw (Expand Search), peterow (Expand Search), petruow (Expand Search), perow (Expand Search)
petro » petrov (Expand Search), petru (Expand Search), petero (Expand Search), petruo (Expand Search), pero (Expand Search)
petruivw » peteruivw (Expand Search), petruuivw (Expand Search), peruivw (Expand Search)
petriiovw » peteriiovw (Expand Search), petruiiovw (Expand Search), periiovw (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), peri (Expand Search)
petr » peter (Expand Search), petru (Expand Search), per (Expand Search)
petruov » peteruov (Expand Search), petruuov (Expand Search), peruov (Expand Search), petrov (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 ((((petruivw OR petriiovw) OR ((petrow OR petri) OR petro)) o) OR ((petr OR petruov) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruivw OR petriiovw) OR ((petrow OR petri) OR petro)) o) OR ((petr OR petruov) _)). s.*".