Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petrouv » petrov (Expand Search), peterouv (Expand Search), petruouv (Expand Search), petroouv (Expand Search)
petruuuuv » peteruuuuv (Expand Search), petruuuuuv (Expand Search), petrouuuuv (Expand Search)
petroouuuuv » peteroouuuuv (Expand Search), petruoouuuuv (Expand Search), petrooouuuuv (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (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 ((peterov OR (petrouv OR (peteruuv OR (petruuuuv OR petroouuuuv)))) OR (petr OR petri)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR (petrouv OR (peteruuv OR (petruuuuv OR petroouuuuv)))) OR (petr OR petri)) o.s.*".