Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriiiov » peteriiiov (Expand Search), petriiiiov (Expand Search), petruiiiov (Expand Search)
petriiiiov » peteriiiiov (Expand Search), petriiiiiov (Expand Search), petruiiiiov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (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 ((peteriov OR (peteriiov OR (petriiiov OR petriiiiov))) OR ((petruov OR petroi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriov OR (peteriiov OR (petriiiov OR petriiiiov))) OR ((petruov OR petroi) OR petr)) o.s.*".