Perhaps you should try some spelling variations:
petrov » petro (Expand Search), peterov (Expand Search), petriov (Expand Search), petroov (Expand Search)
petrow » petro (Expand Search), petrowna (Expand Search), peterow (Expand Search), petriow (Expand Search), petroow (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petroiov (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search), pentru (Expand Search), petri (Expand Search)
peteru » peter (Expand Search), peters (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 petriov) OR peterov) OR petrow) o) OR ((petr OR (petru OR peteru)) _)). s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((((petrov OR petriov) OR peterov) OR petrow) o) OR ((petr OR (petru OR peteru)) _)). s.*".