Perhaps you should try some spelling variations:
peteriiv » peterdi (Expand Search)
petrouov » petrov (Expand Search), peterouov (Expand Search), petriouov (Expand Search), petroouov (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petroiov (Expand Search)
petruuiv » peteruuiv (Expand Search), petriuuiv (Expand Search), petrouuiv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petr » peter (Expand Search), petri (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 ((petriov OR (peteriiv OR (peteriuiv OR petruuiv))) OR ((petru OR petrouov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR (peteriiv OR (peteriuiv OR petruuiv))) OR ((petru OR petrouov) OR petr)) o.s.*".