Perhaps you should try some spelling variations:
petruiov » peteruiov (Expand Search), petriuiov (Expand Search), petruuiov (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petruoi » peteruoi (Expand Search), petriuoi (Expand Search), petruuoi (Expand Search)
petruuoi » peteruuoi (Expand Search), petriuuoi (Expand Search), petruuuoi (Expand Search)
petriiuo » peteriiuo (Expand Search), petriiiuo (Expand Search), petruiiuo (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 ((petruiov OR petrov) OR (((petruoi OR petruuoi) OR (petriiuo OR peteriuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruiov OR petrov) OR (((petruoi OR petruuoi) OR (petriiuo OR peteriuo)) OR petr)) o.s.*".