Perhaps you should try some spelling variations:
peterow » petrow (Expand Search)
petro » petri (Expand Search), petru (Expand Search), petero (Expand Search), petrio (Expand Search), petruo (Expand Search)
petrov » petriv (Expand Search), petruv (Expand Search), peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petruivw » peteruivw (Expand Search), petriuivw (Expand Search), petruuivw (Expand Search)
petriiovw » peteriiovw (Expand Search), petriiiovw (Expand Search), petruiiovw (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 (peterow OR petro)) o) OR ((petr OR petrov) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruivw OR petriiovw) OR (peterow OR petro)) o) OR ((petr OR petrov) _)). s.*".