Perhaps you should try some spelling variations:
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petruiiov » peteruiiov (Expand Search), petriuiiov (Expand Search), petruuiiov (Expand Search)
petruuov » peteruuov (Expand Search), petriuuov (Expand Search), petruuuov (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petruiuv » peteruiuv (Expand Search), petriuiuv (Expand Search), petruuiuv (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 (((((petrov OR petruiiov) OR petruuov) OR (petriiv OR petruiuv)) OR petriiv) OR petr) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((((petrov OR petruiiov) OR petruuov) OR (petriiv OR petruiuv)) OR petriiv) OR petr) o.s.*".