Perhaps you should try some spelling variations:
petrioiv » petrov (Expand Search), peterioiv (Expand Search), petriioiv (Expand Search), petroioiv (Expand Search)
petriiiiov » peteriiiiov (Expand Search), petriiiiiov (Expand Search), petroiiiiov (Expand Search)
petriv » peteriv (Expand Search), petriiv (Expand Search), petroiv (Expand Search)
petroooio » peteroooio (Expand Search), petrioooio (Expand Search), petrooooio (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 ((petriiiiov OR (petriv OR petrioiv)) OR (((petroooio OR peterdi) OR petru) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiiov OR (petriv OR petrioiv)) OR (((petroooio OR peterdi) OR petru) OR petr)) o.s.*".