Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
peters » petersen (Expand Search)
petruv » petru (Expand Search), petrov (Expand Search), petriuv (Expand Search), petruuv (Expand Search), petrouv (Expand Search)
petroiiuov » petrioiiuov (Expand Search), petruoiiuov (Expand Search), petrooiiuov (Expand Search)
petriuv » petriiuv (Expand Search), petruiuv (Expand Search), petroiuv (Expand Search)
petr » petri (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 (((petroiiuov OR peterov) OR (peters OR (petruv OR petriuv))) OR (petr OR peter)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petroiiuov OR peterov) OR (peters OR (petruv OR petriuv))) OR (petr OR peter)) o.s.*".